JXB 4-Pinion Upgrade for Audi B8/C7/D4 Sport Differential (DIF06A0/1)
Eliminates spider gear failure by adding 2 additional spider gears to the Sport Diff internals.
Limited stock available for assembly at JXB for MKX, MKY, or MKU codes. DIY and MKV options will be available for 2nd production round in late fall.
Offered in 4 variations:
4-pinion assembled at JXB
4-pinion DIY version for at-home assembly
requires 9/16-18 threaded slide hammer available for rental at most auto parts stores
4-pinion + pinion shaft rebuild assembled at JXB
4-pinion + pinion shaft rebuild DIY version for at-home assembly
requires 9/16-18 threaded slide hammer, 3-jaw puller, and a hydraulic press
Eliminates spider gear failure by adding 2 additional spider gears to the Sport Diff internals.
Limited stock available for assembly at JXB for MKX, MKY, or MKU codes. DIY and MKV options will be available for 2nd production round in late fall.
Offered in 4 variations:
4-pinion assembled at JXB
4-pinion DIY version for at-home assembly
requires 9/16-18 threaded slide hammer available for rental at most auto parts stores
4-pinion + pinion shaft rebuild assembled at JXB
4-pinion + pinion shaft rebuild DIY version for at-home assembly
requires 9/16-18 threaded slide hammer, 3-jaw puller, and a hydraulic press
Eliminates spider gear failure by adding 2 additional spider gears to the Sport Diff internals.
Limited stock available for assembly at JXB for MKX, MKY, or MKU codes. DIY and MKV options will be available for 2nd production round in late fall.
Offered in 4 variations:
4-pinion assembled at JXB
4-pinion DIY version for at-home assembly
requires 9/16-18 threaded slide hammer available for rental at most auto parts stores
4-pinion + pinion shaft rebuild assembled at JXB
4-pinion + pinion shaft rebuild DIY version for at-home assembly
requires 9/16-18 threaded slide hammer, 3-jaw puller, and a hydraulic press
The most common failure point on the Audi Sport Differential is the pair of spider gears at the heart of the differential. These gears take 100% of the torque delivered to the rear end. On higher powered and/or heavier cars, it’s common to see them break during launches and 1-2 shifts, usually destroying the casing and ring/pinion gears in the process. Photos below. The 4-pinion upgrade replaces the stock differential with a stronger unit utilizing 4 spider gears instead of 2.
The 4-pinion upgrade is offered in 4 ways:
4-pinion assembled at JXB
4-pinion DIY version for at-home assembly
requires 9/16-18 threaded slide hammer available for rental at most auto parts stores
4-pinion + pinion shaft rebuild assembled at JXB
4-pinion + pinion shaft rebuild DIY version for at-home assembly
requires 9/16-18 slide hammer and a hydraulic press
4-pinion upgrade service includes:
Split-housing 4-pinion differential casing with new taper roller bearings
2 additional OEM spider gears
2 new outer axle oil seals
4 new inner axle oil seals
New pump motor assembly gasket
If you choose the at-home DIY version, you will also receive:
Axle bearing tool kit (TLK01A0), including:
Case splitting wedge/block set
Outer axle seal remover tool
Outer axle seal installer tool
Inner axle seal remover/installer combination tool
Torque override axle shaft removal tool
Side bearing outer race removal tool
Side bearing outer race installer tool
Spider gear pin removal tool
6mL Tube of Permatex Anaerobic gasket maker
If you add the pinion shaft rebuild service, we will also install:
New pinion shaft oil seal
2 new pinion shaft bearings
If you choose the at-home DIY version with the pinion shaft rebuild kit, you will also receive:
Pinion shaft rebuild toolkit (TLK02A0), including:
Pinion seal puller tool
Pinion seal installer tool
Pinion support stand for hydraulic press (needed to reinstall pinion shaft into casing)
Small pinion bearing puller tool
Small pinion bearing race removal tool
Small pinion bearing race installer tool including slide hammer extension
Large pinion bearing race removal tool
Large pinion bearing race installer tool
We recommend confirming on your vehicle the exact differential code. They are found in a number of places:
Stamped into the bottom of the Sport Differential, driver side.
The build label on the “Warranty Voucher” page of the Warranty and Maintenance Manual.
Careful!!! MKV, MKY, and MKU all look very similar.
The build label in the trunk.
Breakdown of the 3 codes shown on the build label.
DIF06A0 - for codes MKX/MKY/MKU - DIY version
DIF06A0-A - for codes MKX/MKY/MKU - Assembled at JXB
DIF06A0-P - for codes MKX/MKY/MKU - DIY version with pinion shaft rebuild kit
DIF06A0-A-P - for codes MKX/MKY/MKU - Assembled at JXB with pinion shaft rebuild service
DIF06A1-A - for code MKV - Assembled at JXB
DIF06A1 - for code MKV - DIY version
DIF06A1-A-P - for code MKV - Assembled at JXB with pinion shaft rebuild service
DIF06A1-P - for code MKV - DIY version with pinion shaft rebuild kit
