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BMW E34 525i M50 2.5L

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BMW E34 525i M50 2.5L Engine Mechanical Parts

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Upgraded Valve Stem Seal Kit

ES#4346287 - vs-vbm6-6cylKT - Upgraded Valve Stem Seal Kit - Includes all the valve stems needed for repairing, replacing, or upgrading your BMW's valves and stem seals! - Supertech - BMW

Includes all the valve stems needed for repairing, replacing, or upgrading your BMW's valves and stem seals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4346287
Mfg#:
VS-VBM6-6CYLKT
In Stock
$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upgraded Oil Pump Shaft Kit - M50/M52 S50/S52

ES#4364734 - 11-AM-UOPSK - Upgraded Oil Pump Shaft Kit - M50/M52 S50/S52 - Avoid oil pressure loss and engine failure with this simple kit! - Achilles Motorsports - BMW

Avoid oil pressure loss and engine failure with this simple kit! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Achilles Motorsports - Corporate Logo
ES#:
4364734
Mfg#:
11-AM-UOPSK
Ships in 1 Business Day
$217.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Crankshaft Seal

ES#19419 - 11142249533 - Rear Crankshaft Seal - Replace when doing a clutch job. - Genuine BMW - BMW

Replace when doing a clutch job. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
19419
Mfg#:
11142249533
In Stock
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hollow Bolt

ES#2597888 - 32416852469 - Hollow Bolt - M14x1.5x26 - Genuine BMW - BMW

M14x1.5x26 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2597888
Mfg#:
32416852469
In Stock
9% off MSRP

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

$20.41

This product was last offered at the strikethrough price on
06-12-2026

$18.67 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Oil Cooler - 10 Row

ES#2764288 - MM0CU - Universal Oil Cooler - 10 Row - Upgrading cooling for your engine oil - Mishimoto - Audi BMW Volkswagen MINI

Upgrading cooling for your engine oil affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For custom applications only. Not a direct bolt on.

Brand:
Mishimoto - Corporate Logo
ES#:
2764288
Mfg#:
MM0CU
In Stock
$410.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Cylinder Head Basic Replacement Kit

ES#2918768 - 11121703637-1KT - Complete Cylinder Head Basic Replacement Kit - Everything you will need to do a head service on your BMW - Assembled By ECS - BMW

Everything you will need to do a head service on your BMW affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 09/1994

Brand:
Assembled By ECS - Corporate Logo
ES#:
2918768
Mfg#:
11121703637-1KT
Ships on Jul 14, 2026
ON SALE!
$2880.38

This product was last offered at the strikethrough price on
02-27-2026

$2769.06 USD
This product is lifetime replacement eligible Partial Replacement

"Yellow" Main Bearing Set

ES#2986415 - 11211706847 - "Yellow" Main Bearing Set - Standard size, single tang uppers with double tang lowers - Kolbenschmidt - BMW
ECS Tuning recommends this product.

Standard size, single tang uppers with double tang lowers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Kolbenschmidt - Corporate Logo
ES#:
2986415
Mfg#:
11211706847
Ships on Jul 7, 2026
Auto Notify
$109.71 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ARP Main Stud Conversion Kit

ES#2576279 - 201-5000 - ARP Main Stud Conversion Kit - Build it right the first time, and keep it together longer - ARP - BMW

Build it right the first time, and keep it together longer affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ARP - Corporate Logo
ES#:
2576279
Mfg#:
201-5000
In Stock
$169.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

M20/M50/M52/M54 High Performance Rod Bearing Set - Standard

ES#4629189 - 6B1490H-STD - M20/M50/M52/M54 High Performance Rod Bearing Set - Standard - Includes upper and lower bearing shells for a complete rod bearing replacement. - ACL - BMW

Includes upper and lower bearing shells for a complete rod bearing replacement. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ACL - Corporate Logo
ES#:
4629189
Mfg#:
6B1490H-STD
In Stock
$156.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Squirter - Priced Each

ES#23948 - 11421748199 - Oil Squirter - Priced Each - Keep the pistons properly lubricated - Genuine BMW - BMW

Keep the pistons properly lubricated affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 09/1992

Brand:
Genuine BMW - Corporate Logo
ES#:
23948
Mfg#:
11421748199
In Stock
13% off MSRP

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

$42.27

This product was last offered at the strikethrough price on
06-12-2026

$36.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

WPC-Treated Race Series Main Bearing Set - M20/M50/M52/M54/S54

ES#4845662 - M5X-WPC-MB - WPC-Treated Race Series Main Bearing Set - M20/M50/M52/M54/S54 - The strongest and smoothest bearings for your BMW, featuring heavy-duty ACL "Duraglide" bearing shells treated by WPC for reduced friction and enhanced durability. - Turner Motorsport - BMW

The strongest and smoothest bearings for your BMW, featuring heavy-duty ACL "Duraglide" bearing shells treated by WPC for reduced friction and enhanced durability. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE TMS20 IN CART FOR BEST PRICE

Brand:
Turner Motorsport - Corporate Logo
ES#:
4845662
Mfg#:
M5X-WPC-MB
In Stock
$520.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

"Yellow" Crankshaft Main Bearing Shell - Set

ES#2626366 - 11211706847 - "Yellow" Crankshaft Main Bearing Shell - Set - Standard bore - Glyco - BMW

Standard bore affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Glyco - Corporate Logo
ES#:
2626366
Mfg#:
11211706847
In Stock
$136.06 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Bearing Bridge - Exhaust

ES#18145 - 11121436224 - Camshaft Bearing Bridge - Exhaust - Used to encase the camshaft in the cylinder head - Genuine BMW - BMW

Used to encase the camshaft in the cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 09/1994

Brand:
Genuine BMW - Corporate Logo
ES#:
18145
Mfg#:
11121436224
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.

$456.99

This product was last offered at the strikethrough price on
06-12-2026

$427.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sealing Ring - Priced Each

ES#54259 - 32411093596 - Sealing Ring - Priced Each - 14x20 - Genuine BMW - BMW MINI

14x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
54259
Mfg#:
32411093596
In Stock
7% off MSRP

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

$2.94

This product was last offered at the strikethrough price on
06-12-2026

$2.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Athena Cut Ring Head Gasket - 84.5mm (84mm Bore)

ES#4758998 - ATH-HG-CR-M50-84 - Athena Cut Ring Head Gasket - 84.5mm (84mm Bore) - Upgrade From The OE MLS Gasket to The Best Performance Head Gasket on the Market! - 5150 Autosport - BMW

Upgrade From The OE MLS Gasket to The Best Performance Head Gasket on the Market! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
5150 Autosport - Corporate Logo
ES#:
4758998
Mfg#:
ATH-HG-CR-M50-84
In Stock
$324.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

6mm Single Groove Valve Keeper - Priced Each

ES#2598482 - KPR-6S-7 - 6mm Single Groove Valve Keeper - Priced Each - Two required per valve, necessary for use with certain supertech valves - Supertech - BMW

Two required per valve, necessary for use with certain supertech valves affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
2598482
Mfg#:
KPR-6S-7
In Stock
$5.99

This product was last offered at the strikethrough price on
03-04-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Mechanical Parts

Whether you're repairing or upgrading your engine, we have engine parts from the most respected suppliers in the business. Purchase engine parts like connecting rods, valves, camshafts, cylinder heads, engine blocks, pistons, and more from ECS Tuning for your next engine repair or overhaul.

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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