Best Dot 4 Class 6 Brake Fluid of 2026

Last updated on 15/01/2026
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1
febi bilstein 21754 Brake Fluid DOT4, pack of one
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febi bilstein 21754 Brake Fluid DOT4, pack of one

febi bilstein
Why we love it
  • High-quality German engineering.
  • Compatible with numerous vehicles.
  • Ideal for optimal braking performance.
Main Highlights
  • Original febi bilstein spare part - Solutions „Made in Germany"
  • Please use the vehicle identification at the top of the page to confirm compatibility with your vehicle. All restrictions must be observed!
  • Volume: 5 litre; Recommended Use: DOT 4; Weight: 5,607 kg
  • OE numbers (for comparison purposes only): Abarth DOT 4; Alfa Romeo Romeo DOT 4; Audi DOT 4; BMW 83 13 0 139 898; Citroën DOT 4; Dacia DOT 4; Daewoo DOT 4; Daihatsu DOT 4, FIAT DOT 4, Ford PKW 1 135 520, Ford US YS5JM6C9103B1A, GM/Opel Zeichnungsnr. 93160363 S1, Honda DOT 4, Hyundai DOT 4, Isuzu (GM) DOT 4, Jaguar DOT 4, Jeep DOT 4, KIA DOT 4, Lancia DOT 4, Land Rover DOT 4, Lexus DOT 4, Mazda DOT 4, Mercedes Benz PKW DOT 4, Mini (BMW) DOT 4, Mitsubishi DOT 4, Nissan DOT 4, Opel 93160363 S1, Peugeot DOT 4, Porsche DOT 4, Renault PKW DOT 4, Saab DOT 4, Seat DOT 4, Skoda DOT 4, Smart DOT 4, Subaru DOT 4, Suzuki DOT 4, Toyota DOT 4, universal truck DOT 4 / 5 Liter, universal application car & LCV DOT 4 / 5 Liter, Vauxhall 93160363 S1, Volvo PKW DOT 4, VW DOT 4
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9.9
Exceptional
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9.9
Exceptional
febi bilstein

febi bilstein 21754 Brake Fluid DOT4, pack of one

Why we love it
  • High-quality German engineering.
  • Compatible with numerous vehicles.
  • Ideal for optimal braking performance.
Main Highlights
  • Original febi bilstein spare part - Solutions „Made in Germany"
  • Please use the vehicle identification at the top of the page to confirm compatibility with your vehicle. All restrictions must be observed!
  • Volume: 5 litre; Recommended Use: DOT 4; Weight: 5,607 kg
  • OE numbers (for comparison purposes only): Abarth DOT 4; Alfa Romeo Romeo DOT 4; Audi DOT 4; BMW 83 13 0 139 898; Citroën DOT 4; Dacia DOT 4; Daewoo DOT 4; Daihatsu DOT 4, FIAT DOT 4, Ford PKW 1 135 520, Ford US YS5JM6C9103B1A, GM/Opel Zeichnungsnr. 93160363 S1, Honda DOT 4, Hyundai DOT 4, Isuzu (GM) DOT 4, Jaguar DOT 4, Jeep DOT 4, KIA DOT 4, Lancia DOT 4, Land Rover DOT 4, Lexus DOT 4, Mazda DOT 4, Mercedes Benz PKW DOT 4, Mini (BMW) DOT 4, Mitsubishi DOT 4, Nissan DOT 4, Opel 93160363 S1, Peugeot DOT 4, Porsche DOT 4, Renault PKW DOT 4, Saab DOT 4, Seat DOT 4, Skoda DOT 4, Smart DOT 4, Subaru DOT 4, Suzuki DOT 4, Toyota DOT 4, universal truck DOT 4 / 5 Liter, universal application car & LCV DOT 4 / 5 Liter, Vauxhall 93160363 S1, Volvo PKW DOT 4, VW DOT 4
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Value for Money
2
Comma BF45L Dot 4 Synthetic Brake Fluid, 5000ml Volume
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Comma BF45L Dot 4 Synthetic Brake Fluid, 5000ml Volume

Comma
9% Off
Why we love it
  • High-quality and durable.
  • Perfect size for storage.
  • Ideal weight for handling.
Main Highlights
  • Volume: 5000ml
  • Highly Efficient
  • Easy to Use
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9.8
Exceptional
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9.8
Exceptional
Comma

Comma BF45L Dot 4 Synthetic Brake Fluid, 5000ml Volume

9% Off
Why we love it
  • High-quality and durable.
  • Perfect size for storage.
  • Ideal weight for handling.
Main Highlights
  • Volume: 5000ml
  • Highly Efficient
  • Easy to Use
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3
Napa DOT 4 ESP Fully Synthetic Brake & Clutch Fluid (NBF4005) - 5 Litres 5L
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Napa DOT 4 ESP Fully Synthetic Brake & Clutch Fluid (NBF4005) - 5 Litres 5L

Napa
Why we love it
  • Vapor lock protection provided.
  • Boosts ABS and ESP systems.
  • Excellent cold weather performance.
Main Highlights
  • Produced by the brake fluid suppliers for Formula 1
  • Provides corrosion protection and vapor lock protection
  • Maximises the performance of ABS and ESP systems
  • Excellent cold weather performance
  • Low viscosity
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9.7
Exceptional
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9.7
Exceptional
Napa

Napa DOT 4 ESP Fully Synthetic Brake & Clutch Fluid (NBF4005) - 5 Litres 5L

Why we love it
  • Vapor lock protection provided.
  • Boosts ABS and ESP systems.
  • Excellent cold weather performance.
Main Highlights
  • Produced by the brake fluid suppliers for Formula 1
  • Provides corrosion protection and vapor lock protection
  • Maximises the performance of ABS and ESP systems
  • Excellent cold weather performance
  • Low viscosity
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4
Castrol React Performance DOT 4 1L

Castrol React Performance DOT 4 1L

Castrol
5% Off
Why we love it
  • Excellent high temperature performance.
  • Lower viscosity at low temperatures.
  • Recommended by vehicle manufacturers.
Main Highlights
  • Castrol React DOT 4 Low Temp brake fluid meets the new ISO 4925 Class 6 specification recommend by many vehicle manufacturers. Castrol React DOT 4 Low Temp is fully compatible with other fluids meeting FMVSS 116 DOT 3, DOT 4 and DOT 5.1. However, in order to maintain the superior performance characteristics of this fluid, avoid mixing with other brake fluid products.
  • Advantages Castrol React DOT 4 Low Temp brake fluid not only exhibits excellent high temperature performance but is also formulated to provide improved low temperature performance. It has been specifically designed to have: Lower viscosity at low temperatures
  • High wet boiling point
  • Recommended by a number of vehicle manufacturers to assist with the speed and control of their electronic stability control systems (ESP and ABS).
  • Hydraulic pressure generated in the brake system is used to apply the wheel brakes.
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9.6
Superb
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9.6
Superb
Castrol

Castrol React Performance DOT 4 1L

5% Off
Why we love it
  • Excellent high temperature performance.
  • Lower viscosity at low temperatures.
  • Recommended by vehicle manufacturers.
Main Highlights
  • Castrol React DOT 4 Low Temp brake fluid meets the new ISO 4925 Class 6 specification recommend by many vehicle manufacturers. Castrol React DOT 4 Low Temp is fully compatible with other fluids meeting FMVSS 116 DOT 3, DOT 4 and DOT 5.1. However, in order to maintain the superior performance characteristics of this fluid, avoid mixing with other brake fluid products.
  • Advantages Castrol React DOT 4 Low Temp brake fluid not only exhibits excellent high temperature performance but is also formulated to provide improved low temperature performance. It has been specifically designed to have: Lower viscosity at low temperatures
  • High wet boiling point
  • Recommended by a number of vehicle manufacturers to assist with the speed and control of their electronic stability control systems (ESP and ABS).
  • Hydraulic pressure generated in the brake system is used to apply the wheel brakes.
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5
Castrol Brake Fluid DOT 4 1-litre
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Castrol Brake Fluid DOT 4 1-litre

Castrol
Why we love it
  • High-performance 100% synthetic formula.
  • DOT 4 for optimal safety.
  • Convenient 1-liter size.
Main Highlights
  • 100% synthetic
  • DOT 4
  • 1 Liter
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9.5
Superb
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9.5
Superb
Castrol

Castrol Brake Fluid DOT 4 1-litre

Why we love it
  • High-performance 100% synthetic formula.
  • DOT 4 for optimal safety.
  • Convenient 1-liter size.
Main Highlights
  • 100% synthetic
  • DOT 4
  • 1 Liter
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6
Bosch Brake Fluid DOT 4 HP, 1 L - For All Modern Vehicles Equipped with ABS and ESP Brakes
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Bosch Brake Fluid DOT 4 HP, 1 L - For All Modern Vehicles Equipped with ABS and ESP Brakes

Bosch
Why we love it
  • High performance for modern vehicles.
  • Excellent heat resistance ensures safety.
  • Quick pressure build-up for reliability.
Main Highlights
  • Compatibility: Suitable for all modern types of vehicles, delivering reliable performance for ABS or ESP systems
  • Bosch quality: Bosch DOT 4 HP complies with FMVSS § 571.116 DOT4, SAE J 1704, and ISO 4925 Class 6 standards
  • Safer braking in all circumstances: High resistance to overheating with a dry boiling point of ≥ 260°C, for reliable performance in demanding situations
  • Recommended maintenance: Replace Bosch DOT 4 HP/LV brake fluid every 2 years to maintain consistent performance and prevent corrosion. Please observe the specifications of the vehicle manufacturer
  • Safety and performance: The excellent fluidity (viscosity: ≥ 700 mm²/s) ensures quick pressure build-up and rapid ABS and ESP activation, even at low temperatures
  • Protects ABS and ESP systems: Refined inhibitor components act as a protective lubricant to avoid noise, wear and corrosion
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9.3
Superb
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9.3
Superb
Bosch

Bosch Brake Fluid DOT 4 HP, 1 L - For All Modern Vehicles Equipped with ABS and ESP Brakes

Why we love it
  • High performance for modern vehicles.
  • Excellent heat resistance ensures safety.
  • Quick pressure build-up for reliability.
Main Highlights
  • Compatibility: Suitable for all modern types of vehicles, delivering reliable performance for ABS or ESP systems
  • Bosch quality: Bosch DOT 4 HP complies with FMVSS § 571.116 DOT4, SAE J 1704, and ISO 4925 Class 6 standards
  • Safer braking in all circumstances: High resistance to overheating with a dry boiling point of ≥ 260°C, for reliable performance in demanding situations
  • Recommended maintenance: Replace Bosch DOT 4 HP/LV brake fluid every 2 years to maintain consistent performance and prevent corrosion. Please observe the specifications of the vehicle manufacturer
  • Safety and performance: The excellent fluidity (viscosity: ≥ 700 mm²/s) ensures quick pressure build-up and rapid ABS and ESP activation, even at low temperatures
  • Protects ABS and ESP systems: Refined inhibitor components act as a protective lubricant to avoid noise, wear and corrosion
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7
Comma BF4ESP1L DOT 4 ESP 1L Synthetic Brake Fluid

Comma BF4ESP1L DOT 4 ESP 1L Synthetic Brake Fluid

Comma
Why we love it
  • Lightweight and easy handling.
  • Compact for easy storage.
  • Top-quality premium materials.
Main Highlights
  • Premium Product
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9.2
Superb
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9.2
Superb
Comma

Comma BF4ESP1L DOT 4 ESP 1L Synthetic Brake Fluid

Why we love it
  • Lightweight and easy handling.
  • Compact for easy storage.
  • Top-quality premium materials.
Main Highlights
  • Premium Product
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8
Comma BF51L 1L Dot 5.1 Synthetic Brake Fluid
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Comma BF51L 1L Dot 5.1 Synthetic Brake Fluid

Comma
15% Off
Why we love it
  • Lightweight and compact size.
  • Dimensions ensure easy storage.
  • High-quality premium product.
Main Highlights
  • Premium Product
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9.1
Superb
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9.1
Superb
Comma

Comma BF51L 1L Dot 5.1 Synthetic Brake Fluid

15% Off
Why we love it
  • Lightweight and compact size.
  • Dimensions ensure easy storage.
  • High-quality premium product.
Main Highlights
  • Premium Product
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9
Comma BF41L 1L DOT 4 Brake and Clutch Fluid - Grey
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Comma BF41L 1L DOT 4 Brake and Clutch Fluid - Grey

Comma
Why we love it
  • Ideal for ABS systems.
  • Meets international standards.
  • Premium quality assured.
Main Highlights
  • * Comma the current standard brake fluid for most manufacturers, and ideal for 75% of European vehicles fitted with ABS.
  • * The current standard brake fluid for most manufacturers.
  • * Ideal for ABS systems. Can be mixed safely with DOT 3 Fluid.
  • * International Classification: FMVSS 116 DOT 4, ISO 4925, SAE J-1704
  • Premium Product
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9.0
Superb
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9.0
Superb
Comma

Comma BF41L 1L DOT 4 Brake and Clutch Fluid - Grey

Why we love it
  • Ideal for ABS systems.
  • Meets international standards.
  • Premium quality assured.
Main Highlights
  • * Comma the current standard brake fluid for most manufacturers, and ideal for 75% of European vehicles fitted with ABS.
  • * The current standard brake fluid for most manufacturers.
  • * Ideal for ABS systems. Can be mixed safely with DOT 3 Fluid.
  • * International Classification: FMVSS 116 DOT 4, ISO 4925, SAE J-1704
  • Premium Product
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10
Castrol Brake Fluid DOT4 1L
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Castrol Brake Fluid DOT4 1L

Castrol
Why we love it
  • Exceeds stringent performance standards.
  • Ultimate protection against corrosion.
  • Designed for extreme conditions.
Main Highlights
  • Product Performance Claims JIS K 2233 Class 4 SAE J1703 SAE J1704 ISO 4925 Class 4 FMVSS 116 DOT 4
  • Description Castrol Brake Fluid DOT4 is a high boiling synthetic brake fluid which far exceeds the requirements of the SAE J1703,SAE J1704, FMVSS 116 DOT 4 , ISO 4925 and Jis K 2233 specifications. Castrol Brake Fluid DOT4 is designed for use in all brake systems particularly those which are exposed to extreme conditions.
  • Application This product has been formulated from mixed polyalkylene glycol ethers and borate esters together with other high performance additives and inhibitors which give ultimate system protection against the effects of corrosion and high temperature vapour lock.
  • Conditions of Use Castrol Brake Fluid DOT4 should not be used in braking systems for which a mineral oil based fluid is recommended (for example some Citreon systems for which Castrol LHM plus is suitable and Rolls Royce vehicles for which Castrol CHSMO Plus is approved.
  • Storage All packages should be stored under cover. Where outside storage is unavoidable drums should be laid horizontally to avoid the possible ingress of water and the obliteration of drum markings. Products should not be stored above 60°C, exposed to hot sun or freezing conditions.
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8.9
Excellent
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8.9
Excellent
Castrol

Castrol Brake Fluid DOT4 1L

Why we love it
  • Exceeds stringent performance standards.
  • Ultimate protection against corrosion.
  • Designed for extreme conditions.
Main Highlights
  • Product Performance Claims JIS K 2233 Class 4 SAE J1703 SAE J1704 ISO 4925 Class 4 FMVSS 116 DOT 4
  • Description Castrol Brake Fluid DOT4 is a high boiling synthetic brake fluid which far exceeds the requirements of the SAE J1703,SAE J1704, FMVSS 116 DOT 4 , ISO 4925 and Jis K 2233 specifications. Castrol Brake Fluid DOT4 is designed for use in all brake systems particularly those which are exposed to extreme conditions.
  • Application This product has been formulated from mixed polyalkylene glycol ethers and borate esters together with other high performance additives and inhibitors which give ultimate system protection against the effects of corrosion and high temperature vapour lock.
  • Conditions of Use Castrol Brake Fluid DOT4 should not be used in braking systems for which a mineral oil based fluid is recommended (for example some Citreon systems for which Castrol LHM plus is suitable and Rolls Royce vehicles for which Castrol CHSMO Plus is approved.
  • Storage All packages should be stored under cover. Where outside storage is unavoidable drums should be laid horizontally to avoid the possible ingress of water and the obliteration of drum markings. Products should not be stored above 60°C, exposed to hot sun or freezing conditions.
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We scanned 1022 products

We reviewed these offers relevant to the Dot 4 Class 6 Brake Fluid within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like febi bilstein, Comma, Napa, Castrol, Bosch, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Dot 4 Class 6 Brake Fluid in the market, we considered we took a deep dive into 5111 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

  • The clear winner of our analysis is febi bilstein 21754 Brake Fluid DOT4, pack of one. We love many things about this product by febi bilstein. What sets it apart from the competition is High-quality German engineering. , Compatible with numerous vehicles. , Ideal for optimal braking performance.
  • The best value product for most shoppers and where user satisfaction is continuously the highest is Comma BF45L Dot 4 Synthetic Brake Fluid, 5000ml Volume by Comma based on online reviews by bloggers, experts and online shoppers.
  • The biggest bargain at the moment for Dot 4 Class 6 Brake Fluid and the best cost-to-value ratio is Comma BF51L 1L Dot 5.1 Synthetic Brake Fluidat Comma with a 15% discount.
  • Our list of the best Dot 4 Class 6 Brake Fluid is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.