Mercedes-Benz OM646 2.2 CDI Engine
Used & Reconditioned for Sale
OM 646 DE 22 LA, OM 646 DE 22 LA EVO, OM646.8xx, OM646.9xx, 2.2 CDI, 2.1 CDI
2,148cc
Displacement
Diesel
Fuel
2002–2010
Production
Fits Mercedes-Benz C-Class, E-Class, CLK, CLC, SLK, Sprinter, Vito, Viano models — also known as OM 646 DE 22 LA, 2.2 CDI, 2.1 CDI. Verified fitment, fixed prices, UK delivery.
Displacement
Fuel
Production
Configuration
Applications
Verified Fitment
Checked by registration
12-Month Warranty
On reconditioned units
UK Nationwide Delivery
2-4 working days
14-Day Returns
Uninstalled, full refund
Buy an OM646 Engine for Your Vehicle
The OM646 2.2 CDI is one of Mercedes-Benz's most durable diesel four-cylinders, fitted across 6 distinct passenger car and commercial vehicle applications between 2002 and 2010. Each application group below is configured and priced for its specific vehicle fitment, with verified compatibility by registration.
C-Class W203/W204
Fits C200 CDI (2003–2009) and C220 CDI (2007–2009)
£1,095
Coming soonE-Class W211
Fits E200 CDI and E220 CDI (2002–2009)
£1,195
Coming soonCLK/CLC
Fits CLK 200/220 CDI (2003–2010) and CLC 200/220 CDI (2008–2010)
£1,095
Coming soonSLK R171
Fits SLK 220 CDI (2004–2011) — roadster-specific configuration
£1,250
Coming soonSprinter W906
Fits 209–509 CDI variants (2006–2010) — commercial-duty build
£1,395
Coming soonVito/Viano W639
Fits Vito 109/111/115 CDI and Viano 2.0/2.2 CDI (2003–2010)
£1,295
Coming soonFull OM646 Compatibility
The OM646 2.2 CDI was fitted longitudinally across Mercedes-Benz passenger cars (C-Class, E-Class, CLK, CLC, SLK) and commercial vehicles (Sprinter, Vito, Viano) from 2002 to 2010. Every row below links to its specific unit page, and compatibility can be confirmed instantly using our registration checker.
| Model | Chassis | Variants | Years | Config. | Unit page |
|---|---|---|---|---|---|
| C-Class | W203/S203/C203 | C200 CDI | 2003–2007 | Longitudinal | Coming soon |
| C-Class | W204/S204 | C200 CDI, C220 CDI | 2007–2009 | Longitudinal | Coming soon |
| E-Class | W211/S211 | E200 CDI, E220 CDI | 2002–2009 | Longitudinal | Coming soon |
| CLK-Class | C209/A209 | CLK 200 CDI, CLK 220 CDI | 2003–2010 | Longitudinal | Coming soon |
| SLK-Class | R171 | SLK 220 CDI | 2004–2011 | Longitudinal | Coming soon |
| Sprinter | W906 | 209 CDI, 211 CDI, 215 CDI, 309 CDI, 311 CDI, 315 CDI, 509 CDI | 2006–2010 | Longitudinal (van) | Coming soon |
| Vito | W639 | 109 CDI, 111 CDI, 115 CDI | 2003–2010 | Longitudinal (van) | Coming soon |
| Viano | W639 | 2.0 CDI, 2.2 CDI | 2003–2010 | Longitudinal (van) | Coming soon |
| CLC-Class | CL203 | CLC 200 CDI, CLC 220 CDI | 2008–2010 | Longitudinal | Coming soon |
Confirm your exact specification with the registration checker above.
OM646 Engine Prices
The OM646 2.2 CDI is available in both used and reconditioned condition across all six application groups. Used units offer excellent value for passenger car applications, while reconditioned units are more commonly selected for commercial vehicles where reliability and duty cycles justify the additional investment.
| Application | Used from | Reconditioned from |
|---|---|---|
| C-Class W203/W204 | £1,095 | £1,900 |
| E-Class W211 | £1,195 | £2,000 |
| CLK/CLC | £1,095 | £1,900 |
| SLK R171 | £1,250 | £2,100 |
| Sprinter W906 | £1,395 | £2,350 |
| Vito/Viano W639 | £1,295 | £2,200 |
Prices shown are current lowest listed prices and update as stock changes. The price on each listing is the price you pay — no hidden fees at checkout.
What You Get with a OM646 Engine
What You Get with a OM646 Engine
What's included
Not included
Used or reconditioned?
For passenger car applications (Groups 1–4), used OM646 units are widely available given the large UK parc and offer strong value-for-money. For commercial applications (Groups 5–6), reconditioned units are more commonly selected given the higher replacement cost and commercial duty cycle demands. OM646 engines are widely regarded as one of Mercedes-Benz's most durable diesel four-cylinders, with a robust duplex timing chain and virtually bulletproof bottom end. Replacement demand is driven primarily by peripheral wear — injector seal degradation (the so-called 'Black Death'), intake soot buildup, and turbocharger wear on higher-mileage examples — rather than catastrophic internal failure. Every unit we supply has injector seats inspected, timing components verified, and the turbocharger assessed as standard before dispatch.
OM646 Engine Buying FAQs
Answers to common fitment, condition, warranty and delivery questions.
A:Mercedes-Benz C-Class (W203/W204), E-Class (W211), CLK (C209), CLC (CL203), SLK (R171), Sprinter (W906), Vito (W639), and Viano (W639) — spanning 2002 to 2010.
A:The OM646 is technically designated OM 646 DE 22 LA (and OM 646 DE 22 LA EVO for post-2006 variants). Sub-codes include .811, .812 (C-Class), .953 (E-Class), .961 (E-Class), .982 (Viano), .984 (Sprinter/Vito) — all are the same base engine with application-specific ancillaries.
A:For passenger car applications (Groups 1–4), used OM646 units are widely available given the large UK parc and offer strong value-for-money. For commercial applications (Groups 5–6), reconditioned units are more commonly selected given the higher replacement cost and commercial duty cycle demands.
A:Use our registration checker or verify against your V5C/logbook. The engine code is stamped on the engine block — OM646 will be visible. Match against the chassis and year ranges listed in the compatibility matrix.
A:All units come with a 6–12 month warranty depending on condition (used vs recon). UK nationwide palletised delivery is available. Free compatibility check included with every enquiry.
Find Your OM646 Engine by Registration
Enter your vehicle registration to confirm exact fitment and see available units for your specific chassis. All prices are fixed — no hidden fees.