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Audi A4 Differential Parts

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Fill/Drain Plug - Priced Each

ES#8233 - WHT001937 - Fill/Drain Plug - Priced Each - Removed to drain or fill your transmission/differential fluid. M24x1.5 - Genuine Volkswagen Audi - Audi Volkswagen

Removed to drain or fill your transmission/differential fluid. M24x1.5 Manual transmission vehicles only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
8233
Mfg#:
WHT001937
In Stock
3% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$14.88

This product was last offered at the strikethrough price on
11-05-2026

$14.38 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Service Kit

ES#4620705 - G055190A2-1KT - Rear Differential Service Kit - Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. - Assembled By ECS - Audi

Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4620705
Mfg#:
G055190A2-1KT
In Stock
ON SALE!
$97.99

This product was last offered at the strikethrough price on
11-05-2026

$95.05 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#3659099 - n10037106KT5 - Rear Differential Service Kit - Complete kit with Motul Gear 300 fluid with OEM Drain/Fill plugs to service your rear differential - Assembled By ECS - Audi Volkswagen

Complete kit with Motul Gear 300 fluid with OEM Drain/Fill plugs to service your rear differential 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3659099
Mfg#:
N10037106KT5
In Stock
ON SALE!
$101.99

This product was last offered at the strikethrough price on
06-16-2026

$94.16 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Driveshaft Gasket - Priced Each

ES#258579 - 183521141A - Driveshaft Gasket - Priced Each - Fits the front and rear position - Genuine Volkswagen Audi - Audi Volkswagen

Fits the front and rear position

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
258579
Mfg#:
183521141A
In Stock
8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$30.00

This product was last offered at the strikethrough price on
09-29-2026

$27.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Performance Gear Oil (GL4+) SAE 75W-90 (20L JUG)

ES#3660870 - 20014 - High Performance Gear Oil (GL4+) SAE 75W-90 (20L JUG) - Fully synthetic GL4+ gear oil, for use on the street or the track - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz Porsche

Fully synthetic GL4+ gear oil, for use on the street or the track 10X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3660870
Mfg#:
20014
Ships in 1 Business Day
5% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$524.99

This product was last offered at the strikethrough price on
11-05-2026

$500.99 USD

ECS Magnetic Differential Oil Drain Plug - M16x1.5 - Priced Each

ES#4414249 - 017145LA01 - ECS Magnetic Differential Oil Drain Plug - M16x1.5 - Priced Each - Monitor the condition of your differential at each service and remove harmful metallic contaminants from imposing premature wear - ECS - Audi Volkswagen Porsche

Monitor the condition of your differential at each service and remove harmful metallic contaminants from imposing premature wear 10X Entries Into Our F80 M3 Sweepstakes

For axle code letter HNL, HNP, JKN

Brand:
ECS - Corporate Logo
ES#:
4414249
Mfg#:
017145LA01
Ships on Jan 12, 2027
ON SALE! SAVE 30%
$41.99

This product was last offered at the strikethrough price on
06-13-2026

$29.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MT-85 75W-85 GL-4 Gear Oil - 1 Quart

ES#2847948 - 50504 - MT-85 75W-85 GL-4 Gear Oil - 1 Quart - Synthetic gear oil for superior performance in your differential - Redline - Audi Mercedes Benz

Synthetic gear oil for superior performance in your differential

Brand:
Redline - Corporate Logo
ES#:
2847948
Mfg#:
50504
In Stock
$25.99 USD
Free Shipping
on orders $49 and up

Rear Differential Service Kit

ES#4158614 - n90281802ktKT1 - Rear Differential Service Kit - Complete kit with Redline 75w90 fluid with ECS stainless steel magnetic plugs and seals to service your rear differential. - Assembled By ECS - Audi Volkswagen

Complete kit with Redline 75w90 fluid with ECS stainless steel magnetic plugs and seals to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with Torque Vectoring differentials

Brand:
Assembled By ECS - Corporate Logo
ES#:
4158614
Mfg#:
N90281802KTKT1
In Stock
ON SALE! SAVE 12%
$101.99

This product was last offered at the strikethrough price on
06-16-2026

$89.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

75W-85 Differential Oil - 1 Liter

ES#4840668 - 000989730411PDNW - 75W-85 Differential Oil - 1 Liter - One (1) Liter Bottle - MB 235.7 / MB 239.7 Spec - Genuine Mercedes Benz - Audi Mercedes Benz

One (1) Liter Bottle - MB 235.7 / MB 239.7 Spec

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
4840668
Mfg#:
000989730411PDNW
In Stock
6% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$82.00

This product was last offered at the strikethrough price on
11-05-2026

$76.99 USD
Free Shipping
on orders $49 and up

Hex Low Profile Service Sockets

ES#4464389 - AGA-SS-8-14-K - Hex Low Profile Service Sockets - Due to minimal clearance, its difficult to get a hex socket in the gaps to remove plugs on rear differentials, transfer case and other engine drain/fill plugs. - AGA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Due to minimal clearance, it’s difficult to get a hex socket in the gaps to remove plugs on rear differentials, transfer case and other engine drain/fill plugs.

Brand:
AGA Tools - Corporate Logo
ES#:
4464389
Mfg#:
AGA-SS-8-14-K
Ships in 7 Business Days
$169.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hightec TOPGEAR SAE 75W-90 S - 1 Liter

ES#5374135 - 25002-0010-99 - Hightec TOPGEAR SAE 75W-90 S - 1 Liter - Fully synthetic, multigrade gearbox oil of performance rating API GL-4/5 for multi-functional use in axle gears and manual gearboxes - ROWE - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Fully synthetic, multigrade gearbox oil of performance rating API GL-4/5 for multi-functional use in axle gears and manual gearboxes

Brand:
ROWE - Corporate Logo
ES#:
5374135
Mfg#:
25002-0010-99
In Stock
$19.99 USD
Free Shipping
on orders $49 and up

Rear Differential Carrier Mount Insert Kit

ES#2966689 - 034-505-2016 - Rear Differential Carrier Mount Insert Kit - Installation is very simple, can be performed in minutes, and is completely reversible. - 034Motorsport - Audi

Installation is very simple, can be performed in minutes, and is completely reversible. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2966689
Mfg#:
034-505-2016
Ships in 2 Business Days
$134.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Service Kit

ES#3660796 - n10037105ktKT7 - Rear Differential Service Kit - Complete kit with Redline 75w90 fluid with OEM drain/fill plugs and seals to service your rear differential. - Assembled By ECS - Audi

Complete kit with Redline 75w90 fluid with OEM drain/fill plugs and seals to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles without Torque Vectoring differentials

Brand:
Assembled By ECS - Corporate Logo
ES#:
3660796
Mfg#:
N10037105KTKT7
In Stock
ON SALE!
$98.99

This product was last offered at the strikethrough price on
11-05-2026

$95.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Fill & Drain Plug (M16x1.5)

ES#288792 - 0AA409057 - Fill & Drain Plug (M16x1.5) - Differential fill & drain plug - Genuine Volkswagen Audi - Audi Volkswagen

Differential fill & drain plug For axle code letter HNL, HNP, JKN

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
288792
Mfg#:
0AA409057
Ships in 2 Business Days
37% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$37.99

This product was last offered at the strikethrough price on
08-13-2026

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Differential Parts

Stock or limited-slip, we stock bearings, repair parts, complete differential units, and approved differential fluids so you can keep sending power to the axles without noise, harshness, or vibration.

Let us help you find the parts that fit your Audi

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Manufacturer names and/or part numbers are used only for identification purposes.

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