Is the Delphi EJBR04201D compatible with the Mercedes-Benz C-Class (W204)?

Yes. The Delphi EJBR04201D is a direct replacement diesel injector for the Mercedes-Benz C-Class (W204) 2.2 CDi and the other listed applications. Always confirm fitment by engine code or vehicle registration before ordering.

Does the Delphi EJBR04201D require injector coding?

No injector coding is required for the Delphi EJBR04201D on most applications. Always follow the manufacturer's fitting procedure.

Is the EJBR04201D supplied tested?

Yes. Every Delphi EJBR04201D is OEM bench-tested and calibrated to manufacturer tolerances before dispatch.

Is a warranty included with the EJBR04201D?

Yes. The Delphi EJBR04201D includes a 12 months warranty as standard, with free UK delivery.

Is an exchange or core return required?

No core exchange is required for the Delphi EJBR04201D. The price shown is the full price — nothing further to pay or return.

What engines use the EJBR04201D injector?

The EJBR04201D injector is used in OM646.811, OM646.812, OM648.811, 646.811, 646.812 engine codes.

What are symptoms of a failing EJBR04201D injector?

Common symptoms of a failing EJBR04201D injector include hard starting, rough idle, excessive black or white smoke, engine misfires, poor fuel economy, and loss of power under load. A professional leak-off test can confirm whether the injector needs replacing.

How much does it cost to replace the EJBR04201D injector?

A remanufactured Delphi EJBR04201D injector typically costs between £120 and £120. Labour costs vary by vehicle but usually add £100–£250 per injector. All our remanufactured injectors come with a 12-month warranty.

Genuine Delphi EJBR04201D remanufactured diesel injector for Mercedes-Benz OM646 / OM648 with etched A 646 070 0987 Mercedes OE marking

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Need Help Confirming Fitment?

Not sure this injector fits your vehicle? Check using your registration number before ordering.

Engine Code or Cross Reference

Delphi EJBR04201D Diesel Injector

Name: Remanufactured Delphi Diesel Injector EJBR04201D
Brand: Delphi
SKU: EJBR04201D
Price: 120.00 GBP
Availability: InStock

DELPHI

Part No: EJBR04201D

·Trade & Garage Friendly

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The Delphi EJBR04201D diesel injector is a remanufactured common-rail injector for 2.2 / 3.0 CDi engines. Mercedes-Benz OM646 / OM648 (W204 / W211 / X204) Delphi Remanufactured Common-Rail Injector.

£120inc. VAT

(per injector)

+ £20 refundable core deposit per injector — refunded when your old unit is returned within 30 days

All prices are shown in GBP (£). International customers are securely charged in GBP via Stripe.

Save 38% vs OEM price

Professionally remanufactured to OEM standards

Ordering a single injector is standard practice.

Need multiple injectors? Simply increase the quantity above.

Every order includes a 12-month workshop warranty, OEM bench-calibration before despatch.

Most 4-cylinder engines use 4 injectors — replace only what your diagnosis confirms.

In stockTested & calibrated12-month warranty

12-Month Warranty

Included on every remanufactured injector. UK-based support if you ever need it.

Tested Before Dispatch

Flow-tested and calibrated on OEM-grade rigs. Test report on file for every unit.

Free UK Delivery

Mainland tracked dispatch. Order before 2pm for same-working-day pick-up.

Trade buyers: VAT receipt included · Account terms on request · Trusted by UK garages & diesel specialists.

5 Compatible Engine Codes

5 OE References

1 Delphi Reference

Mercedes-Benz OEM Replacement

OEM Bench Tested

Why Buy From Us

OEM Bench Tested & Calibrated

12 Month Warranty

Free UK Delivery

UK Diesel Injector Specialists

Technical Support Available

Not sure this is the right injector? Call us on 020 3355 6581

Free UK Delivery Same-Day Dispatch

FREE UK Delivery

International Delivery — flat £50 per order

One injector or multiple injectors

Ships Worldwide

FREE UK Delivery

Flat £50 International Shipping

Royal Mail Tracked
DPD International
Secure Packaging
Tracking Number Included
12 Month Warranty

Need more later? We keep stock available for repeat orders.

Engine Intelligence

Mercedes 2.2 CDI (OM646 — C-Class, E-Class, Sprinter, Vito) OM646.811

Common symptoms

Chuffing / ticking noise from the injector area
Diesel smell in the engine bay
Hard starting and uneven idle
Black smoke under load
Loss of power with rail-pressure faults

Documented failure modes

Injector seat sealing failure allowing combustion gas blow-by and carbon build-up around the injector (widely documented on this engine family)
Injector back-leak beyond specification
Nozzle wear causing over-fuelling

Diagnostic guidance

Inspect around each injector for hardened carbon from seal blow-by before diagnosis — clean the seat thoroughly before fitting a replacement
Always fit a new copper sealing washer and follow the manufacturer seating procedure
Run a comparative leak-off test across all injectors before condemning one

Fault codes linked to this engine's injectors

P0087 P0093 P0201 P0202 P0203 P0204

Fitment note: OM646 variants (.961/.962/.963) and adjacent OM642/OM651 engines use different injector references — always confirm the number etched on the injector body.

Browse every diesel engine we cover →

Why this injector?

Fits the OM646.811 engine code used in the Mercedes-Benz C-Class (W204) and related diesel variants.
Delphi diesel injector — flow-tested and calibrated on common-rail equipment before despatch.
Commonly specified when investigating rough idle, injector knock, smoke or poor fuel economy on OM646.811 engines.
12-month warranty, free UK delivery and no core exchange required.

Gold VerifiedVerified technical data

Delphi EJBR04201D 2.1/2.2 CDI (OM646) Common Rail Injector (Mercedes-Benz)

AI Technical Summary

Delphi solenoid common-rail injector for the Mercedes-Benz OM646 2.1/2.2 CDI four-cylinder diesel (C/E-Class, Sprinter, Vito). Mercedes OE A6460700987; Delphi equivalent R04201D (HRD342). Replacements are coded to the ECU with the injector trim code. Failures are driven by poor fuel filtration, contamination and back-leakage. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Water-in-fuel corrosion; Nozzle coking.

Common Symptoms

Rough idle / vibrationhigh

A leaking injector unbalances cylinder fuelling on the OM646.

Hard startinghigh

Excess back-leakage drops cranking rail pressure.

Loss of power / limp modehigh

Out-of-range delivery or rail-pressure deviation cuts power.

Black smokemedium

Poor atomisation over-fuels the cylinder.

Engine management lightmedium

Cylinder-specific injector or fuel-metering codes.

Workshop & Fitting Notes

InstallationCode the injector trim code to the correct cylinder with Mercedes XENTRY before road test.
InstallationRenew the combustion seal and hold-down hardware; clean the injector bore.
MisdiagnosisRead live back-leakage data to find the weak cylinder before removal.
WarningFix contamination (filter/water/debris) first; the OM646 is sensitive to fuel quality.
TestingBench-test across delivery and back-leakage points; verify spray pattern before refit.

Frequently Asked Questions

What is Delphi injector EJBR04201D?+

A Delphi solenoid common-rail diesel injector for the Mercedes-Benz OM646 2.1/2.2 CDI engine. Mercedes OE A6460700987; Delphi equivalent R04201D (HRD342).

Which vehicles use EJBR04201D?+

Mercedes C-Class W203/W204, E-Class W211, Sprinter and Vito/Viano 2.1/2.2 CDI (OM646).

Is it solenoid or piezo?+

It is a Delphi solenoid common-rail injector.

Does EJBR04201D need coding?+

Yes - code the injector trim code to the correct cylinder with Mercedes XENTRY when fitting.

What are the OE part numbers?+

Mercedes A6460700987 references Delphi EJBR04201D (R04201D, HRD342).

Does it fit the OM648 six-cylinder?+

No - EJBR04201D is the OM646 four-cylinder injector. The OM648 uses a different part; confirm the OE number and engine code.

What are the symptoms of failure?+

Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.

Why does my OM646 run rough?+

A worn or leaking injector unbalances fuelling; read live back-leakage data and bench-test the suspect cylinder.

What causes these injectors to fail?+

Poor fuel filtration, contamination and back-leakage wear - fix the cause first.

Does a remanufactured EJBR04201D perform like new?+

A properly remanufactured injector is bench-tested and recalibrated to the Delphi plan, then trim-coded on fitment.

Related Injectors

R04201D A6460700987 HRD342

Related Engines

OM646OM646 DE22

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Remanufacturing Process

Injector fully dismantled

Internal components cleaned and inspected

Worn parts replaced

Reassembled and calibrated

Tested before dispatch

See how our injectors are rebuilt step-by-step in our 3D remanufacturing process video.

Vehicles Compatible With This Delphi Injector

Compatible with Mercedes-Benz engines including OM646.811, OM646.812, OM648.811, 646.811, 646.812.

Make	Model	Engine	Years
Mercedes-Benz	C-Class (W204)	C 200 CDI / C 220 CDI (OM646.811)	2007–2009
Mercedes-Benz	E-Class (W211)	E 200 CDI / E 220 CDI (OM646.811)	2006–2009
Mercedes-Benz	E-Class (W211)	E 200/220 CDI 4MATIC (OM646.812)	2006–2009
Mercedes-Benz	GLK-Class (X204)	GLK 200/220 CDI (OM646.811)	2008–2010
Mercedes-Benz	E-Class (W211)	E 280 CDI / E 320 CDI (OM648.811)	2006–2009

Vehicles Using This Injector

Mercedes-Benz C-Class (W204) injector Mercedes-Benz E-Class (W211) injector Mercedes-Benz GLK-Class (X204) injector

Compatible Engines

The EJBR04201D injector is compatible with the following engines:

OM646.811–2.2 / 3.0 CDi OM646.812–2.2 / 3.0 CDi OM648.811–2.2 / 3.0 CDi 646.811–2.2 / 3.0 CDi 646.812–2.2 / 3.0 CDi

Also known as

This injector is sold and listed under the references below. Tap any number to copy it — every reference refers to this same product.

All references resolve to this canonical product page. Always confirm exact fitment before ordering.

Compatible Vehicles

This injector fits the following vehicles. Always confirm exact fitment by engine code or registration before ordering.

Mercedes-Benz C-Class (W204) 2.2 CDi

Mercedes-Benz E-Class (W211) 2.2 CDi

Mercedes-Benz E-Class (W211) 3.0 CDi

Mercedes-Benz GLK-Class (X204) 2.2 CDi

Product Description

The Delphi EJBR04201D diesel injector is a remanufactured common-rail injector for 2.2 / 3.0 CDi engines.

Mercedes-Benz OM646 / OM648 (W204 / W211 / X204) Delphi Remanufactured Common-Rail Injector.

Genuine OEM markings on the injector body: EJBR04201D · A 646 070 0987 (Mercedes OE) · 250H8WS (Delphi calibration code).

Confirm casting code on the injector body before fitting..

Common engine code: OM646.811.

Commonly replaced when investigating rough idle, injector knock, excess smoke or poor fuel economy.

Each injector is tested to OEM standards with a 12-month warranty and free UK delivery.

Workshop Information

Installation Notes

Check injector coding after installation
Ensure fuel system is properly primed
Use calibrated test equipment for verification
Check engine-specific torque values before installation

Recommended Injector Coding

No injector coding is required for the Delphi unit on most applications — follow the manufacturer fitting procedure.

Replacement Advice

Always renew the copper washers / seals and bleed the fuel system before first start. Replace only the injectors your diagnosis confirms and torque fasteners to the manufacturer's published values.

Professional Installation

We recommend installation by a suitably equipped diesel specialist using calibrated test equipment to verify the fuel system after fitting.

Common Engines Using This Injector

646.811 646.812 OM646.811 OM646.812 OM648.811

Common Symptoms of a Failed EJBR04201D Injector

Hard starting Rough idle Excessive smoke Poor fuel economy Engine misfires Loss of power under load

If your vehicle shows these symptoms, replacing the diesel injector may restore engine performance. A leak-off test can confirm the diagnosis.

Testing & Warranty

All remanufactured injectors are tested using OEM-grade diagnostic equipment to ensure fuel pressure and spray pattern meet manufacturer specifications.

OEM Test Bench Calibration

Flow-tested on Bosch EPS 200 series bench to verify fuel delivery rates at all operating pressures.

Leak-Off Testing

Each injector is tested for return flow to ensure no excess fuel is wasted back to the tank.

Solenoid Calibration

Electrical response time verified to ensure precise injection timing and quantity.

12-Month Warranty

Full replacement or refund covering manufacturing defects under normal use. No quibble.

IMA code includedProfessional injector coding may be required after installationUK-based support teamNo core exchange required

EJBR04201D Price Statistics

Average Price

£120.00

inc. VAT

Price Range

£120–£120

inc. VAT

Stock

0/0

In Stock

Prices based on 0 listing for the EJBR04201D injector. All prices include VAT.

Compatible Vehicles for EJBR04201D

EJBR04201D is OE-fit on the vehicles below. Always confirm the engine code on your V5C and the OE marking on the failed unit before ordering — sister part numbers in this family can look identical but carry a different calibration map.