Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350
Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 is a direct-fit replacement heater that maintains optimal DEF fluid temperature for diesel emission control. Priced at $84.73, it ensures reliable cold-weather operation and prevents system errors in compatible Mercedes models.
● In stock
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Key features
- Exact fit for Mercedes-Benz ML250 ML350 diesel models
- Matches OEM part numbers 1664710775 and F01C600244
- Prevents DEF fluid freezing in cold temperatures
- Compact 14.4 x 9.7 x 7.2 inch design for tight fit
- Durable construction for under-vehicle durability
- Weighs only 2.39 lbs for lightweight performance
- Direct replacement with no modifications needed
Pros
- +Precise fitment for targeted Mercedes models
- +Cost-effective compared to dealer alternatives
- +Ensures proper SCR system functionality
Cons
- −Requires part number verification before purchase
- −Limited to specific Mercedes diesel variants
About Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350
What is Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350?
The Labwork DEF Diesel Emissions Fluid Heater is a critical component designed specifically for Mercedes-Benz ML250 and ML350 diesel models. It regulates the temperature of Diesel Exhaust Fluid (DEF) to ensure efficient operation of the Selective Catalytic Reduction (SCR) system. By preventing DEF from freezing in cold conditions, this heater supports proper emissions control, avoids engine derating, and maintains vehicle performance and compliance with environmental standards.
Key features
- Exact Fit — Matches OEM specifications for Mercedes-Benz ML250 and ML350 diesel variants.
- Durable Construction — Built to withstand under-vehicle exposure and thermal cycling.
- Verified Compatibility — Cross-references with part numbers 1664710775 and F01C600244.
- Compact Design — Measures 14.4 x 9.7 x 7.2 inches; fits tight engine bay spaces.
- Direct Replacement — No modifications required; installs using factory mounting points.
- Weight — 2.39 lbs for lightweight integration without added strain.
- Interchange Support — Compatible with multiple OEM and aftermarket numbering systems.
Who is Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 for?
This DEF heater is ideal for Mercedes-Benz owners operating diesel-powered ML250 and ML350 models, especially in colder climates where DEF freezing is a concern. It serves DIY mechanics performing repairs and professional technicians seeking a reliable, cost-effective alternative to dealership parts. It's also suited for fleets aiming to reduce downtime and maintain emissions compliance without premium markups.
How does Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 compare?
Compared to standard polypropylene DEF heaters, this unit delivers OEM-matched thermal performance and fitment precision. It outperforms generic aftermarket versions by ensuring seamless communication with the vehicle’s onboard diagnostics. While dealership units may carry the same specs, they often cost significantly more. Labwork balances affordability with reliability, offering a trusted solution without sacrificing quality or compatibility.
Best use cases
- →Replacing failed DEF heater in ML350 diesel
- →Cold climate maintenance for diesel SUVs
- →OEM-compliant repair without dealership visit
- →Fleet vehicle emissions system upkeep
- →Preventing DEF-related engine warnings
Is Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 right for you?
This DEF heater is best for Mercedes ML250 and ML350 diesel owners experiencing DEF system errors or preparing for winter. Ideal for DIYers with basic mechanical skills or professional shops. Verify your existing part number before purchase. Alternatives include pricier dealer units or less reliable universal heaters that may not integrate properly with Mercedes systems.
How it compares: Compared to generic DEF heaters, this Labwork unit offers superior fit and system compatibility. It matches OEM performance at a lower cost than dealership parts, making it a balanced choice for reliable emissions control in Mercedes diesel SUVs.
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What is the function of the DEF fluid heater?
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The DEF fluid heater prevents diesel exhaust fluid from freezing in cold temperatures, ensuring the emissions system operates correctly and avoiding engine derating or warning messages on compatible Mercedes-Benz diesel models.
Does this heater fit all Mercedes-Benz models?
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No, this heater is designed specifically for diesel versions of the ML250 and ML350. Always verify your existing part number, such as 1664710775 or F01C600244, to ensure correct fitment before installation.
How do I know if my DEF heater is failing?
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Symptoms include DEF system warnings, reduced engine power, or failure to start in cold weather. A malfunctioning heater can trigger diagnostic trouble codes related to fluid temperature in the SCR system.
Is installation difficult for this DEF heater?
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Installation is straightforward for those with basic mechanical experience. It's a direct replacement, but access to the DEF tank area may require lifting the vehicle and removing underbody panels.
Can I use this heater with other DEF system components?
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Yes, this heater integrates with the existing DEF tank and injection system. It does not replace the pump or sensor but works alongside them to maintain proper fluid conditions.
How much does Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 cost?
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Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 is $84.73 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 in stock at Lab Work Auto?
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Yes, Labwork DEF Diesel Emissions Fluid Heater For Mercedes-Benz ML250 ML350 is currently in stock at Lab Work Auto.
Specifications
- SKU
- F7-6128