Reconditioned Audi A4 2.0 TDI Gearbox

12 engine codes for a single gearbox type: the 2.0 TDI A4 6-speed manual

On this engine, the question of manual versus automatic simply does not arise: the entire 2.0 TDI A4 range, from 2004 to 2015, was fitted exclusively with a 6-speed manual gearbox. No S tronic dual-clutch, no Multitronic on this unit. The transmission choice is therefore clear-cut — but identifying the correct reference is anything but.

12 engine codes, references that do not overlap

The 2.0 TDI covers twelve distinct engine codes: BLB, BRE, BRD, BVG, CAGA, CAGB, CAGC, CAHA, CAHB, CJCA, CJCB and CGLC. These codes correspond to different power outputs (from 120 to 170 hp depending on the variant) and to engine generations that are not compatible with the same gearboxes. A reference matched to a BLB will not suit a CAHB, even if the engine capacity and body style are identical. The engine code stamped on the block remains the essential starting point before placing any order.

Key points to watch on the 2.0 TDI 6-speed manual

The 6-speed manual gearboxes fitted to the 2.0 TDI A4 (B7 and B8) are known for premature wear of the 3rd and 4th gear synchronisers, particularly on first-generation engine codes (BLB, BRE). From the CAGA codes onwards, the differential design was revised. Difficult gear changes or juddering when cold are the most common symptoms before complete failure. EDEN BOITES offers these gearboxes on an exchange basis across the full 2004–2015 range.