Locking nut with flange. M8x1.25mm
Secures the manifold to the catalytic converter & catalytic converter to the downpipe
- Brand:
-
- ES#:
- 471981
- Mfg#:
-
N91130801
$1.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Price includes a $910.00 refundable core charge
- Brand:
-
- ES#:
- 2538179
- Mfg#:
-
8K0254250KXKT
$3911.99
This product was last offered at the strikethrough price on
08-30-2026
$3894.99 USD
Free Shipping
Lifetime Replacement
Price includes $300 refundable core charge
- Brand:
-
- ES#:
- 2538178
- Mfg#:
-
8K0254200KXKT
$3590.99
This product was last offered at the strikethrough price on
08-30-2026
$3576.99 USD
Free Shipping
Lifetime Replacement
Contains all of the hardware you need to install new catalytic converters on your Audi
10X Entries Into Our F80 M3 Sweepstakes
- Brand:
-
- ES#:
- 2576283
- Mfg#:
-
8K0253115AKT2
ON SALE!
SAVE 12%
$98.99
This product was last offered at the strikethrough price on
05-02-2026
$86.85 USD
Free Shipping
Lifetime Replacement
Seals the catalytic converter to the downpipe
2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
- Brand:
-
- ES#:
- 4716227
- Mfg#:
-
8K0253115D
$11.99
This product was last offered at the strikethrough price on
04-20-2026
$9.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Seals the manifolds to the catalytic converters
2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
- Brand:
-
- ES#:
- 4501325
- Mfg#:
-
8K0253115A
$6.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Keep your emissions in check
Not for sale or use in the state of California.
New York & Federal Compliant
- Brand:
-
- ES#:
- 2975031
- Mfg#:
-
49136
$1142.00 USD
Free Shipping
Lifetime Replacement
Allows the manifold to be secured to the cylinder head. M8x28
- Brand:
-
- ES#:
- 1878317
- Mfg#:
-
N91187001
$7.47 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Keep your emissions in check
Not for sale or use in the state of California.
New York & Federal Compliant
- Brand:
-
- ES#:
- 2975030
- Mfg#:
-
49135
$932.00 USD
Free Shipping
Lifetime Replacement
Seals the catalytic converter to the downpipe
- Brand:
-
- ES#:
- 2696757
- Mfg#:
-
8K0253115K
$5.07 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Seals the manifolds to the catalytic converters
- Brand:
-
- ES#:
- 450445
- Mfg#:
-
8K0253115A
3% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$11.36
This product was last offered at the strikethrough price on
08-30-2026
$10.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Seals the catalytic converter to the downpipe
- Brand:
-
- ES#:
- 2800427
- Mfg#:
-
8K0253115D
$12.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Underbody heatshield located around the 02 sensors on the catalytic converters
- Brand:
-
- ES#:
- 2225126
- Mfg#:
-
8K1804163A
$73.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Seals the catalytic converter to the downpipe
- Brand:
-
- ES#:
- 3448169
- Mfg#:
-
8K0253115K
$8.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Seals the catalytic converter to the downpipe
2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
- Brand:
-
- ES#:
- 3690472
- Mfg#:
-
8K0253115K
$7.99
This product was last offered at the strikethrough price on
04-20-2026
$5.99 USD
Free Shipping
on orders $49 and up
Lifetime Replacement
Underbody heatshield located around the 02 sensors on the catalytic converters
- Brand:
-
- ES#:
- 452769
- Mfg#:
-
8K1804164C
$69.99 USD
Free Shipping
Lifetime Replacement
