Engine · 3.6L 6-cyl
300-RL00437A Engine interchange
300-RL00437A is a Redline engine interchange code that fits 4 vehicles from 2005–2008, option 3.6L 6-cyl.
INFERRED
Inferred: matched by vehicle specs. Likely right; confirm before you sell.
Fits
| Year | Make | Model | Option |
|---|---|---|---|
| 2005 | Buick | LaCrosse | 3.6L 6-cyl |
| 2006 | Buick | LaCrosse | 3.6L 6-cyl |
| 2007 | Buick | LaCrosse | 3.6L 6-cyl |
| 2008 | Buick | LaCrosse | 3.6L 6-cyl |
OEM numbers
How to verify
- Check the ID tag or engine code against the OEM numbers above.
- Decode the VIN to confirm year, model and powertrain.
- Compare the part physically: mounts, connectors and dimensions.
Information is a guide only. Verify fitment before sale. No warranty is given.
Last updated 2026-10-03