High-quality aluminum core radiator designed for efficient engine cooling. Compatible with Audi A4 Quattro and Volkswagen Passat models requiring OEM part number 8D0121251M. Provides excellent heat dissipation, corrosion resistance, and reliable performance for long service life.
Part number: 8D0121251M
Applications: Used on Audi A4 (Quattro) and Volkswagen Passat from late 1990s to early-2000s.
Replacement / Alternative numbers: 8D0121251BC, 8D0121251BH, 8D0121251P etc. These are closely related versions.
Here are the typical dimensions, materials, and other technical attributes:
| Parameter | Detail |
|---|---|
| Core material | Aluminium (core) with plastic tanks in many aftermarket units. |
| Tank material | Often plastic for the end tanks. |
| Core dimensions | ~ 632 mm × 398 mm (width × height) × ~32 mm thick. |
| Placement | Front of engine bay, directly behind front bumper, as main engine cooling radiator. |
| Style | Cross-flow radiator. That is, coolant flows horizontally across the core. |
| Rows | Usually single‐core, one pass. Some versions may differ. |
| Fitment types | Direct replacement for original radiator; does not generally require modification. |
| Additional features | Many aftermarket versions are leak-tested. Warranty often 1 year. Some include radiator cap (but often sold separately unless pictured). |
Fits Audi A4 Quattro for years ~1996-2001 (varies slightly by engine type) with 1.8 L and possibly 2.8 L.
Also fits VW Passat B5 / B5.5 models, years ~1998-2005, for 1.8 L and 2.0 L engines.
OEM vs Aftermarket: OEM versions from manufacturers like Nissens (OE quality) are available.
Because it is aluminium, the radiator is lighter than older copper/brass ones, offers good heat dissipation.
Thickness (~32 mm) + large core area means reasonably good cooling capacity, necessary for engines with forced induction or under heavy load (e.g. Quattro system adds load).
Plastic tanks are more prone to damage from thermal cycling or impact vs all-metal versions, so care with installation and during lifetime is important.
