Is the Delphi 28307309 compatible with the Mercedes-Benz C-Class (W204)?

Yes. The Delphi 28307309 is a direct replacement diesel injector for the Mercedes-Benz C-Class (W204) 2.1 CDI and the other listed applications. Always confirm fitment by engine code or vehicle registration before ordering.

Does the Delphi 28307309 require injector coding?

No injector coding is required for the Delphi 28307309 on most applications. Always follow the manufacturer's fitting procedure.

Is the 28307309 supplied tested?

Yes. Every Delphi 28307309 is OEM bench-tested and calibrated to manufacturer tolerances before dispatch.

Is a warranty included with the 28307309?

Yes. The Delphi 28307309 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 28307309. The price shown is the full price — nothing further to pay or return.

Is the 28307309 injector new or remanufactured?

This Delphi injector is professionally remanufactured. It's fully stripped, cleaned, rebuilt with new internal components, tested on flow test equipment, and calibrated to OEM specification. Comes with a 12 months warranty.

Does the 28307309 injector require coding after fitting?

Most modern common-rail diesel vehicles require injector coding after installation. The IMA code (injection quantity adjustment) is programmed into the ECU. If you're unsure whether the 28307309 needs coding for your vehicle, contact us with your registration.

What vehicles does the 28307309 injector fit?

The 28307309 is commonly fitted to Mercedes-Benz diesel models. Full application list is shown above. For exact fitment confirmation, enter your vehicle registration or contact us with your VIN.

What warranty is included with the 28307309?

This injector includes a 12 months warranty covering manufacturing defects. The warranty does not cover fitting damage, contaminated fuel systems, or electrical faults. We recommend professional fitting by a diesel specialist.

Is there a surcharge or core exchange required?

No core exchange or surcharge is required. Simply order, fit, and dispose of your old injector responsibly. Some injector suppliers require you to return your old part – we don't.

Can you confirm the 28307309 fits my vehicle before I order?

Yes. Send us your vehicle registration or VIN and we'll confirm exact compatibility before dispatch. We check against manufacturer data to ensure the correct injector for your engine variant.

Delphi 28307309 remanufactured diesel injector boxed hero image

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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 28307309 Diesel Injector

Name: Remanufactured Delphi Diesel Injector 28307309
Brand: Delphi
SKU: 28307309
Price: 100.00 GBP
Availability: InStock

DELPHI

Part No: 28307309

·Trade & Garage Friendly

Not 100% sure? or call us.

In Stock — Ships within 24 hours

The Delphi 28307309 diesel injector is a remanufactured common-rail injector for engines. Delphi remanufactured diesel injector for Mercedes OM651 applications.

£100inc. 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

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 2.1 CDI (OM651 Delphi era — C-Class, E-Class, Sprinter, Vito) OM651.955

Common symptoms

Hard starting, especially cold
Rough idle, uneven running or vibration
Misfire and loss of power, limp mode in severe cases
White, black or blue smoke
Knocking / ticking from the injector area, fuel smell, higher consumption

Documented failure modes

Early Delphi piezo injector failures — widely documented on 2009–2011 OM651 engines, addressed by a manufacturer service campaign
Injector delivery drift with correction values out of range
Injector leakage allowing fuel dilution of the engine oil in advanced cases

Diagnostic guidance

Check injector correction values across all four cylinders — an outlier identifies the failing unit
On early (2009–2011) engines with running complaints, injector history matters: many were replaced under the manufacturer campaign — verify which units are fitted
Monitor the engine-oil level on suspected leaking injectors
Injector coding is required after fitting — follow the manufacturer procedure

Fault codes linked to this engine's injectors

P0087 P0093 P0201 P0202 P0203 P0204 P2146 P2149

Fitment note: OM651 injection changed technology over its life — early Delphi piezo units differ from the later Bosch solenoid type (OM651950-era); the two are NOT interchangeable and this guidance covers the Delphi era only. Always match the reference etched on the injector body.

Browse every diesel engine we cover →

Why this injector?

Fits the OM651.955 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 OM651.955 engines.
12-month warranty, free UK delivery and no core exchange required.

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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 OM651.955, OM651.956, OM651.957, OM651.958, OM646.989.

Make	Model	Engine	Years
Mercedes-Benz	C-Class (W204)	2.1 CDI 170/204 (OM651.955/956)	2011–2014
Mercedes-Benz	E-Class (W212)	2.1 CDI 170/204 (OM651.955/957)	2011–2016
Mercedes-Benz	GLK (X204)	2.1 CDI 170/204 (OM651.955/958)	2012–2015
Mercedes-Benz	Sprinter (W906)	2.1 CDI 129/163 (OM651)	2013–2018
Mercedes-Benz	Vito (W639)	2.1 CDI 136/163 (OM651.955)	2011–2014
Mercedes-Benz	C-Class (W203)	2.2 CDI 150 (OM646.989)	2003–2007

Vehicles Using This Injector

Mercedes-Benz C-Class (W204) injector Mercedes-Benz E-Class (W212) injector Mercedes-Benz GLK (X204) injector Mercedes-Benz Sprinter (W906) injector Mercedes-Benz Vito (W639) injector Mercedes-Benz C-Class (W203) injector

Compatible Engines

The 28307309 injector is compatible with the following engines:

OM651.955 OM651.956 OM651.957 OM651.958 OM646.989

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 (W203) 2.2 CDI

Mercedes-Benz C-Class (W204) 2.1 CDI

Mercedes-Benz E-Class (W212) 2.1 CDI

Mercedes-Benz GLK (X204) 2.1 CDI

Mercedes-Benz Sprinter (W906) 2.1 CDI

Mercedes-Benz Vito (W639) 2.1 CDI

Product Description

The Delphi 28307309 diesel injector is a remanufactured common-rail injector for engines.

Delphi remanufactured diesel injector for Mercedes OM651 applications.

OEM tested and calibrated on CR318 PRO test bench.

12-month warranty included.

Free UK delivery.

Suitable for professional garage use.

Exchange unit — return your old injector within 21 days..

Common engine code: OM651.955.

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

OM646.989 OM651.955 OM651.956 OM651.957 OM651.958

Common Symptoms of a Failed 28307309 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.