Description
Product Overview
The DPTOOL Fuel Injector Rail Seal Remover Installer Set (model HBZPM278) is a precision‑engineered tool designed for Mercedes‑Benz engines ranging from M133 to M278. Constructed from hardened machined steel, the set includes a black sealing tool, a metal support piece, an open plastic support ring, and a snap‑ring extractor. Weighing just 11.3 ounces and packaged in a compact 8.11 x 4.09 x 1.85‑inch box, it offers both durability and ease of handling. The OEM equivalent part number 278 589 01 15 03 ensures an exact match to factory specifications, guaranteeing a seamless fit and long service life.
Usage
Designed for professional workshops and qualified DIY technicians, this tool excels in environments where fuel rail seal integrity is critical. Whether you are resealing the fuel rail on a Mercedes‑Benz CLA250, performing injector replacement on a C63 AMG, or servicing the high‑performance M264 engine, the set simplifies the process. Begin by using sharp‑nosed pliers to remove the snap ring, then employ the black sealing tool to extract the metal support piece, plastic ring, and seal. The ergonomic design reduces hand fatigue during extended service sessions. 
Why Choose Us
DPTOOL stands for precision and reliability in automotive tooling. Each component undergoes rigorous quality testing to meet OEM standards, ensuring that the tool performs consistently across all compatible models. The machined steel construction resists wear and corrosion, extending the tool’s lifespan beyond typical aftermarket alternatives. Our commitment to exact OEM matching eliminates the guesswork often associated with generic seal tools, providing confidence in every repair.
Key Features
- Exact OEM match – part number 278 589 01 15 03 ensures perfect compatibility.
- Hardened machined steel construction for maximum durability and wear resistance.
- Complete kit includes seal remover, installer, snap‑ring extractor, and support rings.
- Compact, lightweight design (11.3 oz) for easy handling and storage.
- Applicable to a wide range of Mercedes‑Benz models including CLA250, C300, GLC300, and AMG variants.
FAQ
Is this tool compatible with all Mercedes‑Benz engines?
The set is specifically designed for M133, M139, M176, M177, M178, M254, M260, M264, M270, M274, M276, and M278 engine families. Verify your engine code before purchase.
Can I use this tool for both removal and installation?
Yes, the kit includes components for extracting the existing seal and installing a new one, streamlining the entire service process.
What is the recommended torque for reinstalling the seal?
Follow the vehicle’s service manual; typically, a torque of 8‑10 Nm is recommended for the rail mounting bolts after seal installation.
Do I need additional tools to complete the job?
Only a pair of sharp‑nosed pliers is required to remove the snap ring before using the DPTOOL set.
Is there a warranty on this tool?
DPTOOL offers a one‑year limited warranty covering manufacturing defects for peace of mind.






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