Mercedes‑Benz OM668 1.7 CDI Engine
Used & Reconditioned for Sale
OM 668 DE 17 A, OM 668 DE 17 LA, 668.940, 668.941, 668.942, 1.7 CDI
1.7L (1,689 cc)
Displacement
Diesel
Fuel
1998–2005
Production
Fits Mercedes A‑Class W168 and Vaneo W414 — reconditioned units with warranty, 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 OM668 Engine for Your Vehicle
Reconditioned OM668 1.7 CDI units are available for both A‑Class W168 and Vaneo W414 applications. Each engine is fully rebuilt, tested, and supplied with a warranty — configured and priced for its specific vehicle.
Application availability is being added. Contact us to confirm a compatible engine.
Full OM668 Compatibility
Every OM668 engine we supply is compatibility‑checked by registration before dispatch. The table below shows every Mercedes model that uses this engine — verify your chassis code to ensure a perfect match.
| Model | Chassis | Variants | Years | Config. | Unit page |
|---|
Confirm your exact specification with the registration checker above.
OM668 Engine Prices
Reconditioned OM668 units are priced per application group. Prices shown are for rebuilt long‑blocks with a 12‑month warranty. Used units are rarely available due to donor‑parc age — reconditioned is the recommended route.
| Application | Used from | Reconditioned from |
|---|
TABLE RULE: No valid numeric prices in ERF — table omitted per Pricing Law.
What You Get with a OM668 Engine
What You Get with a OM668 Engine
What's included
Complete long‑block assembly; Renewed timing chain, tensioners and guides (recon); Rebuilt cylinder head with new valve stem seals (recon); Tested‑before‑dispatch on a running test rig; 6–12 month warranty (depending on condition tier)
Not included
- Turbocharger (reusable if sound; assess separately)
- Fuel injectors and HP fuel pump
- Ancillaries (alternator, starter, A/C compressor)
- Fitting and installation
Used or reconditioned?
For the OM668, used engines are increasingly difficult to source due to the age of the donor parc. Reconditioned units are the recommended route for both A‑Class W168 and Vaneo W414 applications, offering guaranteed service life and a warranty that used engines cannot provide. The OM668 1.7 CDI was Mercedes' first common‑rail diesel for the compact class, fitted to the A‑Class W168 and Vaneo W414 from 1997 to 2005. With the youngest of these engines now over 20 years old, replacement demand is driven by injector wear, turbocharger degradation, and general age‑related mechanical wear. Every unit we supply has injector seats inspected, the turbocharger assessed, and the timing chain checked as standard before dispatch.
OM668 Engine Buying FAQs
Answers to common fitment, condition, warranty and delivery questions.
A:The OM668 1.7 CDI is fitted to Mercedes‑Benz A‑Class W168 (A 160 CDI, A 170 CDI, 1998–2004) and Mercedes‑Benz Vaneo W414 (Vaneo CDI, Vaneo 1.7 CDI, 2001–2005).
A:The engine is known as OM668, OM 668 DE 17 A, OM 668 DE 17 LA, 668.940, 668.941, 668.942, and commonly as the "1.7 CDI" in the trade. The Vaneo‑specific variant carries code 668.914.
A:For the OM668, used engines are increasingly difficult to source due to the age of the donor parc. Reconditioned units are the recommended route for both A‑Class W168 and Vaneo W414 applications, offering guaranteed service life and a warranty that used engines cannot provide. Reconditioned units provide documented rebuild history and warranty coverage that used engines cannot match.
A:Use our registration checker or verify your V5C against the engine code stamped on the block. Match against 668.940, 668.941, or 668.942 for A‑Class; 668.914 for Vaneo.
A:All reconditioned OM668 units come with a 6–12 month warranty. UK nationwide palletised delivery is available, with a free compatibility check included before dispatch.
Check Your OM668 Fitment by Registration
Enter your registration or VIN to confirm the correct OM668 variant for your A‑Class or Vaneo — then buy at the listed price with free UK delivery.