SMG Components for BMW 3 Series E46 (1999-2005)

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The sequential manual transmission is an excellent gearbox that provides lightning-fast shifts and manual control. Due to the cutting edge design and awsome performance it allows, certain components may need to be serviced from time to time.

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Genuine BMW CSL SMG Expansion Tank - E46 M3

T#:383934

Part#: 21532282549

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$ 224.99 USD

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$ 224.99 USD

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This is required when installing a CSL airbox on an M3 with an SMG transmission. The expansion tank holds the hydraulic fluid for the SMG clutch cylinder.

Genuine BMW SMG Shifter Detent Kit - E46 M3 W/ SMG Transmission ...

T#:637266

Part#: S6S420G-SMGKT

Ships in 5 Business Days

$ 371.99 USD

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$ 371.99 USD

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Have you noticed your BMW having trouble getting into gear? Refresh your BMW's entire shifter detent system with this all-in-one kit! Over time shifter springs can wear out, the locking pin and 8mm ball can become damaged, and excess play allows for the transmission to potentially come out of gear. By replacing the springs, locking pin, and plugs, this excess play is effectively eliminated, helping to keep your BMW in the proper gear!

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Genuine BMW Repair Kit, Hydraulic Pump - 23427571297 - E46,E63,E85 ...

T#:50840

Part#: 23427571297

Ships in 6 Business Days

2% off MSRP $ 896.99

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

$ 874.99 USD

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2% off MSRP

$ 896.99

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

$ 874.99 USD

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A common fault with the SMG system, the hydraulic pump is the usual point of failure that prevents proper operation and gear shifts in your BMW.

Genuine BMW Repair Kit, Hydraulic Pump -
This item fits the following BMW Chassis:
E46,E63,E85

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SMG Hydraulic Pump with Pressure Accumulator - E46 M3

T#:5388

Part#: 21532229715

Ships in 9 Business Days

9% off MSRP $ 8,430.68

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

$ 7,672.93 USD

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Qty

9% off MSRP

$ 8,430.68

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

$ 7,672.93 USD

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This hydraulic unit includes the pump and pressure accumulator for the SMG transmission on E46 M3. It helps to maintain pressure in the system for proper shifting. A faulty unit can cause delays in shifting or a failure to engage any gears.

This item fits the following BMWs:
2001-2006 E46 BMW M3, M3 Convertible

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Genuine BMW CSL SMG Expansion Tank Bracket - 41147896136 - E46 M3 CSL...

T#:361538

Part#: 41147896136

In Stock

Sale - Save 39% $ 29.99

This product was last offered at the strikethrough price on
05-02-2026

$ 18.29 USD

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Qty

Sale - Save 39%

$ 29.99

This product was last offered at the strikethrough price on
05-02-2026

$ 18.29 USD

Add to Wish List

When you upgrade to the CSL intake, you have to replace and relocate the SMG reservoir. This bracket mount the new reservoir after the CSL conversion exactly as designed by BMW.

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SMG Components for BMW 3 Series E46 (1999-2005)

Genuine BMW CSL SMG Expansion Tank - E46 M3

Genuine BMW SMG Shifter Detent Kit - E46 M3 W/ SMG Transmission ...

Genuine BMW Repair Kit, Hydraulic Pump - 23427571297 - E46,E63,E85 ...

SMG Hydraulic Pump with Pressure Accumulator - E46 M3

Genuine BMW CSL SMG Expansion Tank Bracket - 41147896136 - E46 M3 CSL...

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