Description
SWAG 30 94 4510 coolant expansion tank for the Audi A6 C6 (4F), 2004 on. Replaces Audi 4F0 121 403 N. New old stock, never fitted. The box shows storage age. The part is new and unused.
One in stock.
What it is. The plastic header tank that holds spare coolant and lets it expand as the engine warms up. Old tanks go brittle and crack, and they leak at the seams or around the cap. A leaking tank lets the engine run low on coolant and overheat.
Specification
- Replaces Audi 4F0 121 403 N, 4F0 121 403 C, 4F0 121 403 G and 4F0 121 403 R
- Same part as Febi 44510, Meyle 100 223 0006, Mahle CRT 20 000S and Nissens 996288
- SWAG is part of the Bilstein group in Germany
What it fits
- Audi A6 C6 (4F), 2004 on
- Engines 2.0 TDI, 2.0 TFSI, 2.4, 2.7 TDI, 2.8 FSI, 3.0 TDI, 3.0 FSI and 3.2 FSI
The cap and level sensor are not listed as included. Swap them over from your old tank if they are still good.
Fitment
Check the number on your old tank, or send us your rego and we will confirm before you buy.
Fitting
- Let the engine cool fully before you open the cooling system.
- Drain some coolant, unplug the level sensor and undo the hoses.
- Fit the new tank, refill with the correct coolant and bleed the air out.
- Check for leaks once the engine is warm.
Best fitted by a qualified mechanic.