Automotive replacement part designed to restore fuel injector leak-off return function for specified Mercedes-Benz CDI engines. Peace of mind for workshop technicians and DIY mechanics who need a dependable, direct-fit spare, and reduced time spent diagnosing return-line faults. Is the BIAREN Fuel Injector Leak Off Return Pipe the right match for your Mercedes and repair needs?
⚡ At a Glance
- • Fitment and seal: Compatible with a wide range of Mercedes-Benz CDI models, matches OEM numbers A6510700132 and 6510700132, supplied as 1pc
- • Best for: Workshop technicians and competent home mechanics replacing leak-off return lines on listed Mercedes models
- • Not ideal for: Anyone who cannot verify OEM number or item photo before ordering
Replacement leak-off return pipe for multiple Mercedes-Benz CDI engines, listed with OEM numbers A6510700132 and 6510700132. Buyers should check the item photo and OEM number of the old part to confirm fit.
Direct OEM-matching swap – Thanks to OEM number A6510700132
Listing shows OEM numbers A6510700132 and 6510700132, allowing buyers to compare the part number against the original component. Matching numbers simplifies identification and reduces the need for modifications at fitment.
Quick identification against the original part reduces workshop time, enabling a straightforward replacement for compatible Mercedes CDI engines.
Reliable sealing when refitting O-rings – With correct O-ring reuse
User feedback notes reliable sealing when the original O-rings are used, indicating the mating surfaces and connector geometry align with factory parts. Sealing depends on correct O-ring condition and proper installation technique.
When O-rings are in good condition or correctly matched, the return line remains leak-free, cutting the risk of fuel odour and loss after repair.
Simple verification before purchase – Thanks to clear item photos and OEM listing
Product description recommends checking the item photo and OEM number against the old part, giving a visual and numeric method to confirm compatibility. That guidance helps avoid ordering mistakes across similar-looking parts.
Comparing photos and OEM numbers lowers the chance of returns and ensures the replacement matches the vehicle before fitting.
✨ The 4 Key Reasons for BIAREN Fuel Injector Leak Off Return Pipe
- Sturdy construction – Confirms durability under engine bay heat and vibration according to user feedback
- Leak-free results with correct installation – Reported by users when original O-rings are reused and fittings are checked
- Easy fit identification – OEM numbers and photos simplify matching the old part, reducing ordering errors
- Supplied as 1pc – Ideal for replacing a single return pipe without surplus components
📋 Technical Details at a Glance
- Category: Automotive replacement part
- Brand: BIAREN
- Part type: Fuel injector leak-off return pipe
- Compatible models (overview): Mercedes-Benz Vito, Viano, Sprinter, A-Class, B-Class, C-Class, E-Class, ML-Class, S-Class, CLA, GLA, GLC, GLK, SLC, SLK
- Compatible models (details): Vito / Viano W639 2.0/2.2 CDI (2003 onwards); Vito W447 2.2 CDI (2014 onwards); Sprinter W906 2.1/2.2 CDI (2006 onwards)
❓ Frequently Asked Questions
Q: Will this fit my Mercedes model?
A: Compatibility is listed for many Mercedes-Benz CDI models, including Vito W639/W447, Sprinter W906, A-Class W176, B-Class W246/W242, C-Class W204/W205, E-Class W212, and several others. Buyers should compare the OEM number and item photo with the old part to confirm fit.
Q: Are O-rings included with the pipe?
A: Product descriptions do not state that O-rings are included, and user feedback mentions sealing correctly when original O-rings are used. Check the item photos and seller notes, or be prepared to reuse or source matching O-rings.
Q: How many pieces are supplied?
A: The listing specifies quantity 1pc, suitable for replacing a single leak-off return pipe.
🏆 Our Verdict
Suitable for owners and mechanics working on the listed Mercedes-Benz CDI models who need a direct-fit replacement, verified by OEM numbers. OEM-number matching and user-reported sealing with original O-rings are the key advantages, backed by positive feedback on build quality. A straightforward choice for repair work, offering sensible long-term value when matched carefully before purchase.
