# Automotive Tubing Market

> Automotive Tubing market: USD 14.93 billion in 2025, USD 23.18 billion by 2035 at 4.50% CAGR as EV coolant and heat-pump lines raise content per car.

Publisher: Douglas Insights  
Author: Douglas Insights Research Desk  
Report code: DI-AT-10576  
Published: 2026-10-07  
Last updated: 2026-10-07  
Next review: Apr 2027  
Page: https://www.douglasinsights.com/automotive-tubing-market/

## Key figures

| Measure | Value | How it is built |
| --- | --- | --- |
| Market size · 2025 | $14.93 Bn | 104.7 million sets times USD 142.6 = USD 14.93 billion |
| Forecast · 2035 | $23.18 Bn | 2.14% volume and 2.31% price compounded for 10 years |
| Revenue CAGR · 2026-2035 | 4.50% | Volume and price legs multiplied |
| Volume · 2035 | 129.4 million sets | 104.7 million sets grown 2.14% a year |
| Leading segment | Thermal management and coolant lines, 31.7% | USD 4.73 billion in 2025 |
| Fastest segment | Thermal management and coolant lines, 7.18% | Battery, inverter and heat-pump circuits |
| Fastest region | Asia Pacific, 5.21% | USD 8.17 billion in 2025 to USD 13.57 billion in 2035 |
| Market leader | TI Automotive, about 9.6% | Douglas Insights estimate; USD 5.4 billion combined group revenue |
| Event | ABC Technologies completes TI Fluid Systems acquisition, 15 April 2025 | Company announcement |

## Key takeaways

- Automotive tubing is worth USD 14.93 billion in 2025: 104.7 million sets at USD 142.6 each.
- The market reaches USD 23.18 billion by 2035, a 4.50% CAGR from 2.14% volume and 2.31% price.
- Thermal management and coolant lines lead with 31.7% and grow fastest at 7.18% a year.
- Asia Pacific holds 54.7% of revenue and grows 5.21% a year to USD 13.57 billion.
- The top three suppliers hold an estimated 22.1%, led by TI Automotive at about 9.6%.

Automotive tubing is a USD 14.93 billion business in 2025 and a USD 23.18 billion one by 2035, growing 4.50% a year. Automotive tubing covers the rigid and flexible lines that carry brake fluid, fuel and vapour, coolant, refrigerant, urea and transmission oil through a vehicle; the automotive tubing market includes steel, aluminium, polyamide multilayer and rubber constructions sold for original equipment manufacturer (OEM) fitment and aftermarket replacement. Our figure multiplies 104.7 million vehicle-equivalent tubing sets by an average USD 142.6 per set. Supply is consolidating fast: ABC Technologies said on 15 April 2025 that it had [completed its acquisition of TI Fluid Systems](https://tifluidsystems.com/abc-completes-acquisition-tifs/) at an enterprise value of over GBP 1.8 billion, creating TI Automotive with USD 5.4 billion of combined revenue and 34,600 staff in 26 countries. The study belongs to our [automotive components research](https://www.douglasinsights.com/industry/automotive-transportation/automotive-components/) and is built under the [Douglas Insights research methodology](https://www.douglasinsights.com/research-methodology/).

## How much does a vehicle's tubing set cost, from steel brake line to battery coolant loop?

An automotive tubing set costs USD 142.6 on our 2025 blended average, ranging from about USD 85 on a small petrol hatchback to over USD 400 on an air-braked heavy truck. Circuit count, material and the number of quick connectors explain most of that spread.

Douglas Insights puts the realised price bands below at OEM contract level for 5 set types, before freight and assembly-line sequencing fees. Aftermarket brake line kits carry retail mark-ups of 2 to 3 times the OEM equivalent.

| Automotive tubing set type | Realised price band, USD per set | Share of 2025 sets |
| --- | --- | --- |
| Small petrol car, 4 circuits | 85 to 115 | 27.4% |
| Mid-size combustion or mild hybrid car, 5 circuits | 115 to 160 | 33.8% |
| Battery electric car with heat pump | 170 to 240 | 14.6% |
| Pickup, van and light truck | 150 to 220 | 15.9% |
| Medium and heavy truck with air brakes | 300 to 450 | 8.3% |

Electric cars sit at the top of the passenger range because a heat-pump refrigerant circuit and a battery coolant loop add 6 to 9 metres of tubing plus several connectors. Douglas Insights expects the average set price to rise 2.31% a year, reaching USD 179.2 by 2035. About two-thirds of that comes from content mix, the rest from steel, aluminium and polyamide 12 input costs.

The 2026 average set price lands at USD 145.89 in our model, and the market reaches USD 15.60 billion that year.

## Which tubing circuit makes the money: brake, fuel, coolant or refrigerant lines?

Thermal management and coolant lines make the most money in automotive tubing, with 31.7% of 2025 revenue, or USD 4.73 billion. Battery packs, inverters and heat pumps add coolant loops that combustion cars never needed, so that circuit also grows fastest.

| Automotive tubing segment | Share 2025 | Value 2025, USD million | CAGR 2026 to 2035 | Value 2035, USD million |
| --- | --- | --- | --- | --- |
| Thermal management and coolant lines | 31.7% | 4,732.9 | 7.18% | 9,468.1 |
| Brake lines | 22.6% | 3,374.2 | 3.18% | 4,614.5 |
| Fuel and vapour lines | 19.3% | 2,881.5 | 0.87% | 3,142.2 |
| Air conditioning refrigerant lines | 15.8% | 2,359.0 | 5.66% | 4,091.0 |
| Emission, transmission and steering lines | 10.6% | 1,582.6 | 1.68% | 1,869.5 |

Thermal management and coolant lines, worth USD 4.73 billion, lead because every electrified car runs two or three separate coolant loops. Their 7.18% growth rate is the fastest of the five, taking the circuit to USD 9.47 billion by 2035.

Brake lines hold 22.6%, or USD 3.37 billion. Every vehicle, electric or not, needs coated steel or copper-nickel hydraulic lines plus flexible hoses at the wheels, and replacement on corroded fleets keeps growth at 3.18%.

Fuel and vapour lines carry 19.3%, worth USD 2.88 billion, on multilayer polyamide tubes that limit permeation. Battery electric cars remove them entirely, so growth slows to 0.87% a year.

Air conditioning refrigerant lines take 15.8%, or USD 2.36 billion. Heat pumps lengthen these aluminium and rubber circuits, lifting growth to 5.66%.

Emission, transmission and steering lines make up 10.6%, or USD 1.58 billion. Urea dosing tubes and transmission cooler lines shrink with electrification, holding growth to 1.68%.

## Why are battery cooling loops and an ageing fleet lifting automotive tubing demand?

Automotive tubing set volumes grow 2.14% a year in our base case, from a gross 2.87% pace before restraints. Vehicle output, aftermarket replacement and commercial vehicle builds supply that gross pace, measured below in percentage points.

New-vehicle output adds 1.31 points. World motor vehicle production reached 96.4 million units in 2025, up 3.9% from 92.7 million, according to the [release of 23 April 2026](https://oica.net/auto-industry-growth-shifted-east-in-2025-amid-global-repositioning/) from the International Organization of Motor Vehicle Manufacturers (OICA). Asia-Pacific built 59.2 million of those vehicles, up 7.6%, with China alone at 34.53 million. Douglas Insights counts 96.4 million OEM tubing sets for 2025, one per vehicle built, and assumes output grows a little more slowly than in 2025 through the decade. Every one of those vehicles leaves the line with brake lines and at least one coolant circuit fitted.

Aftermarket replacement adds 0.88 points. Brake lines corrode in salted-road climates, and rubber coolant hoses harden with heat cycling, so older fleets return to workshops for new tubing. Our model adds 8.3 million vehicle-equivalent replacement sets in 2025, about 7.9% of all sets. That share rises as the average car on European and North American roads ages, and as early electric cars from 2018 to 2020 reach the age at which coolant hoses and quick connectors need attention.

Commercial vehicles and off-highway equipment add 0.68 points. A heavy truck with air brakes carries several times the tubing of a car: air brake lines, fuel lines, coolant and urea circuits. The brake hose rule Federal Motor Vehicle Safety Standard (FMVSS) 106 covers hydraulic, air and vacuum brake hose for passenger cars, trucks, buses, trailers and motorcycles, and its test regime keeps trailer and truck brake tubing in a qualified, higher-value tier. Fuel-cell trucks add hydrogen supply lines, a circuit TI Automotive now lists alongside its coolant and refrigerant products.

Battery thermal content works through price rather than volume, but it changes what each set contains. Hutchinson describes its [cooling line](https://automotive.hutchinson.com/en/solutions/cooling-line) as an assembly of plastic tubes and rubber hoses with quick connectors, sensors, check valves or bubble traps, rated to 5 bar and 200°C outer temperature, serving battery packs, power electronics and cabins. The three volume contributions sum to 2.87 points; restraints then remove 0.73 points, leaving the 2.14% base volume leg. The 15 April 2025 completion of the ABC Technologies and TI Fluid Systems deal shows suppliers buying scale in thermal tubing ahead of that shift.

## Which headwinds slow automotive tubing volumes as fuel lines disappear?

Restraints remove 0.73 points from automotive tubing set growth: flat Western vehicle output takes 0.31 points, longer-life materials 0.24 points and trade friction 0.18 points. Together they cut a 2.87% gross pace to the 2.14% base.

Flat Western output removes 0.31 points. OICA reports European production fell 0.8% to 17.2 million vehicles in 2025, and the Americas fell 2.1% to 18.74 million, so the higher-priced tubing sets in those regions add little volume.

Longer-life materials remove 0.24 points. Coated steel, stainless and copper-nickel brake lines outlast plain steel, and polyamide multilayer tubing does not perish like rubber, so each replacement cycle stretches by several years.

Trade friction removes 0.18 points. Tariffs on steel and aluminium raise landed costs for bent tube assemblies shipped across borders, encouraging buyers to run down inventory before reordering. Removing fuel lines from battery electric cars is a further drag, but our model books it in the segment growth rates, which is why fuel and vapour lines grow only 0.87%.

## Which suppliers bend, extrude and route automotive tubing for vehicle makers?

The top three automotive tubing suppliers, TI Automotive, Cooper Standard and Hutchinson, hold an estimated 22.1% of 2025 revenue, so hundreds of regional tube benders and hose makers share the rest. TI Automotive leads at about 9.6% on our estimate.

Douglas Insights reckons those shares from disclosed group revenue and the tubing weight in each product range; no supplier reports automotive tubing alone, so every share below is our estimate, not a company disclosure.

| Company | What the automotive tubing position rests on | Douglas Insights estimated share 2025 |
| --- | --- | --- |
| TI Automotive (ABC Technologies) | Thermal management and fluid handling systems; USD 5.4 billion combined revenue | 9.6% |
| Cooper Standard | Fuel and brake delivery and fluid transfer systems | 7.3% |
| Hutchinson | Multi-material cooling lines for battery packs and power electronics | 5.2% |
| Sanoh Industrial | Tubular products for automobiles and transport equipment | 3.4% |
| Tristone Flowtech | Rubber hose and fluid solutions; new Chihuahua plant in 2025 | 2.6% |
| Martinrea | Propulsion systems from cap-less filler to engine | 2.2% |

TI Automotive leads on breadth. The former TI Fluid Systems lists coolant distribution modules, refrigerant lines, battery thermal management and hydrogen supply lines, and it became part of ABC Technologies on 15 April 2025, according to the [company announcement](https://tifluidsystems.com/abc-completes-acquisition-tifs/). The combined group reported USD 5.4 billion of revenue and 34,600 employees.

Cooper Standard competes on fuel and brake delivery systems, including chassis and tank fuel lines, vapour lines and metallic brake line bundles. The company reported full-year 2025 sales of USD 2.74 billion, with fourth-quarter Fluid Handling Systems sales of USD 297.1 million against USD 294.8 million a year earlier, in its [results of 12 February 2026](https://ir.cooperstandard.com/2026-02-12-Cooper-Standard-Reports-Strong-Fourth-Quarter-Cash-Flow-Despite-Industry-Disruption-Continued-Margin-Expansion-and-Positive-Cash-Flow-Highlight-Full-Year-2025-Results).

Hutchinson sells multi-material cooling lines that combine plastic, rubber and metal. Sanoh Industrial specialises in tubular products for automobiles and builds its own processing equipment. Tristone Flowtech, formed in 2010 as a spin-off, calls itself a major player in rubber hose and opened a plant in Chihuahua, Mexico, in 2025 to serve United States-Mexico-Canada Agreement (USMCA) business. Martinrea, with 16,000 team members in 10 countries, supplies propulsion systems from cap-less filler to engine.

Readers comparing bent-tube suppliers should also see the [Car Exhaust Headers Market](https://www.douglasinsights.com/car-exhaust-headers-market/), and those following coolant circuits the [Electric Vehicle Battery Thermal Management System Market](https://www.douglasinsights.com/electric-vehicle-battery-thermal-management-system-market/).

## Where do automotive tubing sales concentrate, from Chinese electric car plants to Mexican lines?

Asia Pacific leads automotive tubing with USD 8.17 billion in 2025, 54.7% of revenue, because the region built 59.2 million vehicles that year. Its 5.21% growth rate is also the fastest, driven by Chinese battery electric output and heat-pump adoption.

Asia Pacific reaches USD 13.57 billion by 2035. China, Japan and India together produced 49.43 million vehicles in 2025 on OICA figures, and Chinese electric cars carry the richest thermal tubing sets in the mass market.

Europe holds USD 3.03 billion, or 20.3%, and grows 3.37% a year to USD 4.22 billion. Output is flat, but Euro 7 evaporative testing and heat pumps raise tubing value per car.

North America accounts for USD 2.78 billion, 18.6% of the total, rising 3.62% a year to USD 3.96 billion. Pickups and large sport utility vehicles carry long brake and fuel line runs, and the United States built 10.24 million vehicles in 2025.

Latin America is worth USD 642.0 million, or 4.3%, growing 4.48% a year to USD 995.1 million on Brazilian output of 2.64 million vehicles.

The Middle East and Africa, at USD 313.6 million and 2.1%, is the wildcard. OICA counted African vehicle sales of 1.29 million in 2025, up 22%, and new local assembly would push its 3.30% tubing growth rate higher.

## Which brake hose standards and Euro 7 evaporative rules shape automotive tubing specs?

Two rule sets shape automotive tubing specifications most: US brake hose standard FMVSS 106, with burst tests at up to 7,000 psi, and Euro 7 evaporative testing set on 25 July 2025.

Under [FMVSS 106](https://www.ecfr.gov/current/title-49/subtitle-B/chapter-V/part-571/subpart-B/section-571.106), hydraulic brake hose assemblies must withstand 4,000 psi of water pressure for two minutes and must not rupture below 7,000 psi for 1/8-inch or 3 mm hose, or below 5,000 psi for larger sizes. Hydraulic hose must keep at least 64% of its nominal inside diameter in the constriction test, air brake hose 66%. Those numbers keep brake tubing a qualified, audited product.

In Europe, Commission Implementing Regulation (EU) 2025/1706 of 25 July 2025 lays down [exhaust and evaporative emission test procedures](https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=OJ:L_202501706) for M1 and N1 vehicles under the Euro 7 Regulation (EU) 2024/1257, including the Type 4 evaporative test. Douglas Insights models this rule as part of the 2.31% price leg, since low-permeation polyamide multilayer fuel and vapour lines cost more than single-layer tube.

## How do 800-volt battery packs change coolant and refrigerant tubing content per vehicle?

Battery electric cars carry about USD 197 of automotive tubing on our model, against USD 128 for a combustion car, because battery, inverter and cabin heat-pump circuits replace the fuel line. That 54% uplift drives most of the 2.31% annual price leg.

Fast-charging packs at 800 volts generate more heat per charge, so coolant loops get larger bores and more branches. Refrigerant lines grow longer when a heat pump links the cabin, battery chiller and front-end module. Hutchinson rates its cooling line to 5 bar working pressure, a typical band for these low-pressure coolant circuits, while refrigerant lines run at much higher pressure in aluminium and barrier hose.

By 2035 we expect 129.4 million tubing sets a year, up from 104.7 million in 2025, with thermal and refrigerant lines together taking 58.5% of 2035 revenue against 47.5% today.

## What if battery thermal loops outrun plan: how far can automotive tubing go by 2035?

A faster case takes automotive tubing to USD 26.58 billion by 2035, against USD 23.18 billion in the base case and USD 19.77 billion in a slower case. Set growth and thermal content per vehicle separate the three paths.

The base case pairs 2.14% set growth with a 2.31% price leg for 4.50% a year. The slower case uses 1.21% volume and 1.62% price, or 2.85% a year, if Western output keeps shrinking and electric adoption stalls. The faster case uses 2.97% volume and 2.88% price, or 5.94% a year, if heat pumps and battery coolant loops spread to every price class.

Sensitivity is uneven: one extra point of annual set growth lifts 2035 revenue by about USD 2.37 billion, while one point less removes USD 2.17 billion. Published forecasts for automotive tubing and its sub-markets run from 3.21% to 8.8% a year; our 4.50% sits in the lower half because we price at realised OEM levels. Consolidation such as the April 2025 TI Fluid Systems deal points toward the faster path for thermal circuits.

## Douglas Exclusive: the Automotive Tubing Circuit Atlas

The Automotive Tubing Circuit Atlas is a Douglas Insights model built from 16 inputs: 12 sourced documents and 4 published growth rates. It maps tubing circuits, metres and value per vehicle across five powertrain types; it is not an official register.

For each powertrain the atlas lists which circuits are fitted, the modelled tubing length and the modelled value per vehicle, then weights the result by our set forecast. Its finding: battery electric and fuel cell vehicles, 2 of 5 powertrain types, account for 61.4% of automotive tubing revenue growth between 2025 and 2035.

| Powertrain | Automotive tubing circuits fitted | Modelled metres per vehicle | Modelled value per vehicle, USD |
| --- | --- | --- | --- |
| Combustion passenger car | Brake, fuel and vapour, coolant, refrigerant, urea and transmission | 21 | 128 |
| Full hybrid car | Brake, fuel and vapour, two coolant loops, refrigerant | 24 | 151 |
| Battery electric car | Brake, battery and inverter coolant, heat-pump refrigerant | 27 | 197 |
| Fuel cell vehicle | Brake, hydrogen supply, stack and battery coolant, refrigerant | 33 | 268 |
| Heavy truck with air brakes | Air brake, fuel, coolant, urea and refrigerant | 46 | 412 |

Read across, the atlas shows why revenue outruns volume: the electric car needs 6 more metres of tubing than the combustion car and USD 69 more value. Our set volume grows 2.14% a year, yet automotive tubing revenue grows 4.50%.

## What methodology turns 104.7 million automotive tubing sets into the 2025 figure?

The automotive tubing model multiplies 104.7 million vehicle-equivalent sets by USD 142.6 per set to reach USD 14.93 billion for 2025, then compounds 2.14% volume and 2.31% price to USD 23.18 billion in 2035.

Sets combine 96.4 million sets for OEM fitment, one per vehicle in the OICA 2025 count, and 8.3 million replacement set equivalents. We covered 5 regions, 5 segments and 6 named suppliers, using 12 sourced documents and 21 modelled ratios. Segment values sum to USD 14.93 billion exactly, and segment 2035 values sum within 0.01% of the global total. Regional rows sum to the global figure in both 2025 and 2035.

Cross-check: Cooper Standard fourth-quarter Fluid Handling Systems sales of USD 297.1 million annualise to about USD 1.19 billion, close to the USD 1.09 billion implied by our 7.3% share estimate once non-tubing products are removed.

## Which automotive tubing contract terms should buyers fix before the 2026 model year?

Automotive tubing buyers face a 2026 average of about USD 145.89 a set, 2.31% above 2025. Indexing steel, aluminium and polyamide inputs and qualifying a second thermal-line supplier protects margin on 106.9 million sets of expected demand.

Thermal management and coolant lines, at 31.7% of revenue and growing 7.18% a year, deserve dual sourcing first. Brake line buyers in North America should confirm FMVSS 106 test records for every hose assembly, and European fuel line buyers should ask suppliers for Type 4 evaporative test data under Regulation (EU) 2025/1706. Buyers of charge air ducts can compare the [Automotive Charge Air Cooler Market](https://www.douglasinsights.com/automotive-charge-air-cooler-market/), where many of the same suppliers bid.

## Market by segment

| Segment | Share | Value |
| --- | --- | --- |
| Thermal management and coolant lines | 31.7% | $4.73 Bn |
| Brake lines | 22.6% | $3.37 Bn |
| Fuel and vapour lines | 19.3% | $2.88 Bn |
| Air conditioning refrigerant lines | 15.8% | $2.36 Bn |
| Emission, transmission and steering lines | 10.6% | $1.58 Bn |

## Market by region (USD million)

| Region | 2025 | 2026 | 2035 | CAGR 2026-2035 |
| --- | --- | --- | --- | --- |
| Global | 14,930.2 | 15,602.1 | 23,184.9 | 4.5% |
| Asia Pacific | 8,166.8 | 8,592.3 | 13,571.3 | 5.21% |
| Europe | 3,030.8 | 3,132.9 | 4,221.8 | 3.37% |
| North America | 2,777 | 2,877.5 | 3,962.9 | 3.62% |
| Latin America | 642 | 670.8 | 995.1 | 4.48% |
| Middle East and Africa | 313.6 | 323.9 | 433.8 | 3.3% |

## Dataset

| Series | Value | Unit |
| --- | --- | --- |
| Market size 2025 | 14,930.2 | USD million |
| Market size 2035 | 23,184.9 | USD million |
| Revenue CAGR 2026-2035 | 4.5 | percent |
| Volume CAGR 2026-2035 | 2.14 | percent |
| Price per tubing set CAGR 2026-2035 | 2.31 | percent |

## Frequently asked questions

### What does one vehicle's automotive tubing set cost a carmaker?

USD 142.6 on the 2025 blended average, from about USD 85 on a small petrol car to over USD 400 on an air-braked heavy truck.

### What is automotive tubing worth now and in 2035?

USD 14.93 billion in 2025, rising to USD 23.18 billion by 2035, a 4.50% revenue CAGR from 2.14% set growth and 2.31% price growth.

### Why do coolant lines out-earn brake lines?

31.7% of 2025 revenue, or USD 4.73 billion, comes from thermal management and coolant lines because electrified cars run two or three coolant loops; brake lines hold 22.6%.

### How much more tubing does an electric car carry than a petrol car?

About 54% more value on our atlas: USD 197 per battery electric car against USD 128 per combustion car, with 27 metres of tubing against 21.

### Where are most automotive tubing sets fitted?

54.7% of revenue sits in Asia Pacific, USD 8.17 billion in 2025, growing 5.21% a year to USD 13.57 billion as the region built 59.2 million vehicles.

### How concentrated is automotive tubing supply?

22.1% of 2025 revenue goes to the top three, TI Automotive, Cooper Standard and Hutchinson, on Douglas Insights estimates, with TI Automotive at about 9.6%.

### Which brake hose test must US tubing pass?

7,000 psi is the minimum burst pressure for 1/8-inch or 3 mm hydraulic brake hose under FMVSS 106, after a 4,000 psi two-minute hold.

### What is the upside case for automotive tubing?

USD 26.58 billion by 2035 in the faster case, using 2.97% volume and 2.88% price growth, against USD 19.77 billion in the slower case.

## Sources

- [OICA, Auto industry growth shifted east in 2025 amid global repositioning](https://oica.net/auto-industry-growth-shifted-east-in-2025-amid-global-repositioning/)
- [TI Fluid Systems, ABC Technologies completes acquisition of TI Fluid Systems](https://tifluidsystems.com/abc-completes-acquisition-tifs/)
- [Cooper Standard, Cooper Standard full year 2025 results](https://ir.cooperstandard.com/2026-02-12-Cooper-Standard-Reports-Strong-Fourth-Quarter-Cash-Flow-Despite-Industry-Disruption-Continued-Margin-Expansion-and-Positive-Cash-Flow-Highlight-Full-Year-2025-Results)
- [EUR-Lex, Commission Implementing Regulation (EU) 2025/1706](https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=OJ:L_202501706)
- [eCFR, FMVSS 106 Brake hoses, 49 CFR 571.106](https://www.ecfr.gov/current/title-49/subtitle-B/chapter-V/part-571/subpart-B/section-571.106)
- [Hutchinson, Cooling line](https://automotive.hutchinson.com/en/solutions/cooling-line)

## How to cite

Douglas Insights, "Automotive Tubing Market", DI-AT-10576, updated 2026-10-07, https://www.douglasinsights.com/automotive-tubing-market/