Emissions System for BMW E46 M3 S54 (1999-2005)

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Is your BMW throwing emissions related codes? While we're primarily a BMW performance parts house, we understand the importance of maintaining your emissions system to pass inspection in your area and keep your check engine light off. Pick up your emissions related parts from Turner Motorsport.

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Comprehensive Constant Pressure Valve Replacement Kit
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:557341
Part#: 11111318185TMSKT
In Stock
Sale - Save 2% $ 85.93

This product was last offered at the strikethrough price on
05-03-2026

$ 84.32 USD
Free Shipping
Sale - Save 2%
$ 85.93

This product was last offered at the strikethrough price on
05-03-2026

$ 84.32 USD
Free Shipping

When your CPV O-ring fails it causes a slow oil leak on the passenger side of the engine, making an oily mess that frequently resembles a rear main seal leak. Replacing the CPV with an upgraded o-ring ensures a long-term solution to this common problem. 

The factory o-ring over time fails from heat cycling and oil exposure due to the Buna rubber used in OEM o-rings, while the included Viton Fluoroelastomer is resistant to a much higher temperature to ensure prolonged life without leaking. 

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Leak Detection Pump
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:15445597
Part#: 16136756440
In Stock
$ 153.99

This product was last offered at the strikethrough price on
09-07-2026

$ 130.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 153.99

This product was last offered at the strikethrough price on
09-07-2026

$ 130.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Leak detection pump tests fuel containment system for vapor leaks to atmosphere. Failed pump often turns on check engine light.
Crankcase Ventilation Hose - E46 M3 Z3M Coupe S54
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:25109076
Part#: 11157831311
Ships on Nov 2, 2026
$ 17.99 USD
Free Shipping on orders $49 and up

This hose runs from the oil separator to the intake manifold and is designed to allow the recirculation of built-up oil vapors.

Due to its proximity to engine heat, this hose tends to get brittle and break as it ages. This can lead to oil leaks, vacuum leaks, misfires, and more.

If your crankcase ventilation hose is brittle or leaking, replace it with this unit from URO Parts.

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Turner Emissions Service Kit - E46 M3
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:555304
Part#: 11157840446KT9
Ships on Feb 3, 2027
$ 426.99

This product was last offered at the strikethrough price on
08-26-2026

$ 412.99 USD
Free Shipping
$ 412.99 USD
Free Shipping

The hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the plastic components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

This kit includes the needed hoses, oil separator, and hardware.

Fits the following BMWs:
09/2004-2006 E46 BMW M3 - Manual Transmission

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Turner Emissions Service Kit - E46 M3
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:555305
Part#: 11157840446KT10
Ships on Feb 3, 2027
$ 296.99

This product was last offered at the strikethrough price on
08-26-2026

$ 282.99 USD
Free Shipping
$ 282.99 USD
Free Shipping

The hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the plastic components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

This kit includes the needed hoses, oil separator, and hardware.

Fits the following BMWs:
2001-09/2004 E46 BMW M3 - Manual Transmission

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