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BMW E46 Engine Parts & Accessories

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ECS Cooling System Refresh Kit - Level 3

ES#2497309 - 17119071519KT4 - ECS Cooling System Refresh Kit - Level 3 - The ultimate cooling refresh kit - with OEM components - Genuine BMW - BMW

The <font color='red'> ultimate</font> cooling refresh kit - with OEM components For vehicles with automatic transmission only and production date from 09/2002

Brand:
Genuine BMW - Corporate Logo
ES#:
2497309
Mfg#:
17119071519KT4
Ships in 1-2 days
$2312.99

This product was last offered at the strikethrough price on
07-22-2026

$2250.99 USD
This product is lifetime replacement eligible Partial Replacement

Cold Climate Oil Separator Kit - Level 2

ES#2603146 - 11617533400KT2 - Cold Climate Oil Separator Kit - Level 2 - A truly complete kit for oil separator system maintenance - Genuine BMW - BMW

A truly complete kit for oil separator system maintenance Superior performance for both warm and cold climates

Brand:
Genuine BMW - Corporate Logo
ES#:
2603146
Mfg#:
11617533400KT2
Ships in 1-2 days
$416.99

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

$374.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Manifold Oxygen Sensor - Front Position/Pre-Cat

ES#11024 - 13952 - Rear Manifold Oxygen Sensor - Front Position/Pre-Cat - Also BMW # 11781405324. Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine - Bosch - BMW

Also BMW # 11781405324. Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
11024
Mfg#:
13952
In Stock
$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

WPC Performance Rod Bearing Replacement Kit

ES#4884041 - 11131437237-KT - WPC Performance Rod Bearing Replacement Kit - The S54 engine is prone to rod bearing failure, especially with higher mileage. Prevent a costly spun bearing and crankshaft damage by replacing your rod bearings before it's too late. - Assembled By ECS - BMW

The S54 engine is prone to rod bearing failure, especially with higher mileage. Prevent a costly spun bearing and crankshaft damage by replacing your rod bearings before it's too late. 10X Entries Into Our F80 M3 Sweepstakes
For Vehicles Produced After 02/2003

Brand:
Assembled By ECS - Corporate Logo
ES#:
4884041
Mfg#:
11131437237-KT
In Stock at Vendor
ON SALE!
$767.00

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

$743.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Performance Kevlar Reinforced Accessory Belt - Water Pump/Alternator - S54 S65

ES#4661030 - 6PK1460 - Performance Kevlar Reinforced Accessory Belt - Water Pump/Alternator - S54 S65 - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Replaces BMW # 11287837898 - ECS - BMW
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Replaces BMW # 11287837898 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4661030
Mfg#:
6PK1460
Ships on Nov 12, 2026
$33.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Tensioner Assembly

ES#4505345 - 11311703746A - Timing Chain Tensioner Assembly - Includes a brand new piston, cylinder, spring, and washer! - Bremmen Parts - BMW

Includes a brand new piston, cylinder, spring, and washer! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4505345
Mfg#:
11311703746A
In Stock
ON SALE! SAVE 12%
$24.99

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

$22.02 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idle Speed Control Valve

ES#33101 - 13411733090 - Idle Speed Control Valve - Located at the front of the intake manifold - Genuine BMW - BMW

Located at the front of the intake manifold

Brand:
Genuine BMW - Corporate Logo
ES#:
33101
Mfg#:
13411733090
Ships in 1-2 days
8% off MSRP

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

$400.99

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

$366.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Shark Injector Performance Software

ES#3138953 - N4MS42 - Shark Injector Performance Software - Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +15HP +12LB/FT gains! - Shark Injector - BMW

Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +15HP +12LB/FT gains!

Brand:
Shark Injector - Corporate Logo
ES#:
3138953
Mfg#:
N4MS42
In Stock
ON SALE! SAVE 10%
$349.00

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

$314.10 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Kit

ES#24087 - 11427833769 - Oil Filter Kit - Genuine BMW filter - Genuine BMW - BMW

Genuine BMW filter

Brand:
Genuine BMW - Corporate Logo
ES#:
24087
Mfg#:
11427833769
In Stock
2% off MSRP

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

$42.94

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

$41.99 USD
Free Shipping
on orders $49 and up

Upper Timing Chain Tensioner

ES#3215707 - 11311738700 - Upper Timing Chain Tensioner - Guide used to tension the timing chain - Ina - BMW

Guide used to tension the timing chain We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3215707
Mfg#:
11311738700
In Stock
$56.20

This product was last offered at the strikethrough price on
07-23-2026

$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Ground Cable Upgrade (12421737755)

ES#4939982 - 059235LA01 - Heavy Duty Ground Cable Upgrade (12421737755) - Restore lasting electrical reliability to your E30, E36, or E46 with a high-quality, corrosion-proof ground strap engineered for long-term performance. - ECS - BMW

Restore lasting electrical reliability to your E30, E36, or E46 with a high-quality, corrosion-proof ground strap engineered for long-term performance. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4939982
Mfg#:
059235LA01
In Stock
ON SALE! SAVE 20%
$29.99

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

$23.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Kit - Level 2

ES#3621813 - e46m54osw2kt3 - Oil Separator Kit - Level 2 - A truly complete kit for oil separator system maintenance, Includes ECS F-Connector - Genuine BMW - BMW

A truly complete kit for oil separator system maintenance, Includes ECS F-Connector

Brand:
Genuine BMW - Corporate Logo
ES#:
3621813
Mfg#:
E46M54OSW2KT3
Ships in 1-2 days
$359.41 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump

ES#2574864 - 11727571589 - Secondary Air Pump - Common source of emissons related issues - Pierburg - BMW
ECS Tuning recommends this product.

Common source of emissons related issues For vehicles with production date from 03/2003

Brand:
Pierburg - Corporate Logo
ES#:
2574864
Mfg#:
11727571589
In Stock
$378.04

This product was last offered at the strikethrough price on
05-13-2026

$358.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CP-Carrillo Connecting Rod Set - S54

ES#4758972 - CAR-S54-SCR - CP-Carrillo Connecting Rod Set - S54 - Upgrade to CP-Carrillo's Forged Connecting Rods! - 5150 Autosport - BMW

Upgrade to CP-Carrillo's Forged Connecting Rods! Upgrade Your Connecting Rods in Your High Horsepower S54!

Brand:
5150 Autosport - Corporate Logo
ES#:
4758972
Mfg#:
CAR-S54-SCR
Ships in 3 Business Days
Starting at $1849.99 USD
Customize
Free Shipping
on orders $49 and up

E46 M3 Performance Cat Back Exhaust

ES#2827626 - SSXBM462 - E46 M3 Performance Cat Back Exhaust - Motorsport pedigree. Superior quality. Excellent sound. Milltek Sport cat-back exhaust for enhanced performance. - Milltek Sport - BMW

Motorsport pedigree. Superior quality. Excellent sound. Milltek Sport cat-back exhaust for enhanced performance.

Brand:
Milltek Sport - Corporate Logo
ES#:
2827626
Mfg#:
SSXBM462
Ships on Oct 21, 2026
ON SALE! SAVE 10%
$2387.99

This product was last offered at the strikethrough price on
09-18-2026

$2148.45 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Pump Kit

ES#2998906 - 16142229684KT - Fuel Pump Kit - Includes new fuel pump with seal, jet pump and filter to address all common fuel issues in one go! - Assembled By ECS - BMW

Includes new fuel pump with seal, jet pump and filter to address all common fuel issues in one go! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2998906
Mfg#:
16142229684KT
Ships in 1-2 days
ON SALE! SAVE 16%
$639.99

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

$536.55 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

Let us help you find the parts that fit your BMW

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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