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BMW E88 135i N55 3.0L

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BMW E88 135i N55 3.0L Performance Cooling Parts

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Thermostat Installation Kit with Thermostat

It?s no secret that modern turbocharged BMW engines run hot. Whether you're turning laps at the track or sitting in summer traffic, high oil temperatures are the enemy of engine longevity and performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
5481206
Mfg#:
OTN54.T85KT2
In Stock
ON SALE!
$390.23 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Billet Cylinder Head Outlet Hose Adapter

ES#3552811 - 024797ECS01 - ECS Billet Cylinder Head Outlet Hose Adapter - Upgrade to a much more durable connection from your cylinder head to your thermostat! Commonly referred to as a "Mickey Mouse" flange/adapter. - ECS - BMW

Upgrade to a much more durable connection from your cylinder head to your thermostat! Commonly referred to as a "Mickey Mouse" flange/adapter. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3552811
Mfg#:
024797ECS01
In Stock
ON SALE! SAVE 25%
$76.99

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

$57.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

N54/N55 Billet Oil Cooler Housing

ES#4809843 - 008731la01KT - N54/N55 Billet Oil Cooler Housing - Reduce oil temperatures with the upgraded billet housing and low-temp thermostat! Allows you to add an oil cooler to your vehicle that didn't have the factory option. - Turner Motorsport - BMW

Reduce oil temperatures with the upgraded billet housing and low-temp thermostat! Allows you to add an oil cooler to your vehicle that didn't have the factory option. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4809843
Mfg#:
008731LA01KT
Ships in 9 Business Days
Auto Notify
ON SALE! SAVE 25%
$343.99

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

$257.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mosselman Billet Oil Thermostat With Installation Kit

ES#4772311 - otn54.t85KT - Mosselman Billet Oil Thermostat With Installation Kit - The MSL thermostat ensures a cooler oil temperature which will result in more stable performance - Mosselman Turbosystems - BMW

The MSL thermostat ensures a cooler oil temperature which will result in more stable performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mosselman Turbosystems - Corporate Logo
ES#:
4772311
Mfg#:
OTN54.T85KT
In Stock
$433.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

ECS Aluminized Silicone Water Pump Hose V2.0

ES#4265534 - 008286LA01 - ECS Aluminized Silicone Water Pump Hose V2.0 - The new and improved upgrade N52/N54/N55 owners have been waiting for. Get rid of that failure-prone water pump to thermostat hose. Updated for easier install. - ECS - BMW

The new and improved upgrade N52/N54/N55 owners have been waiting for. Get rid of that failure-prone water pump to thermostat hose. Updated for easier install. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4265534
Mfg#:
008286LA01
In Stock
ON SALE! SAVE 25%
$106.99

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

$80.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mosselman Billet Oil Thermostat - N54 & E8x E9x N55

ES#4446095 - OTN54.T85 - Mosselman Billet Oil Thermostat - N54 & E8x E9x N55 - The MSL thermostat ensures a cooler oil temperature which will result in more stable performance - Mosselman Turbosystems - BMW

The MSL thermostat ensures a cooler oil temperature which will result in more stable performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mosselman Turbosystems - Corporate Logo
ES#:
4446095
Mfg#:
OTN54.T85
In Stock
$379.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

N55 Heavy Duty Aluminum Expansion Tank Kit

ES#4817875 - 050610LA02 - N55 Heavy Duty Aluminum Expansion Tank Kit - The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind. - Turner Motorsport - BMW
ECS Tuning recommends this product.

The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4817875
Mfg#:
050610LA02
Ships on Jul 27, 2026
Auto Notify
ON SALE! SAVE 25%
$457.99

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

$343.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BMP Cylinder Head Coolant Flange

ES#4880971 - 601-0003 - BMP Cylinder Head Coolant Flange - Replaces the stock plastic flange found in the thermostat to cylinder head coolant hose that is known to fail - Precision Raceworks - BMW

Replaces the stock plastic flange found in the thermostat to cylinder head coolant hose that is known to fail affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4880971
Mfg#:
601-0003
In Stock
$24.99 USD
Free Shipping
on orders $49 and up

ECS Aluminized Silicone Water Pump Hose - with clamps

ES#3659542 - 020414ecs01KT - ECS Aluminized Silicone Water Pump Hose - with clamps - The upgrade N52/N54/N55 owners have been waiting for - get rid of that failure-prone water pump to thermostat hose - ECS - BMW

The upgrade N52/N54/N55 owners have been waiting for - get rid of that failure-prone water pump to thermostat hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3659542
Mfg#:
020414ECS01KT
In Stock
ON SALE! SAVE 25%
$113.99

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

$85.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E9X N54/N55 6MT High-Performance Dual Core Aluminum Radiator

ES#4839753 - 004443LA01 - E9X N54/N55 6MT High-Performance Dual Core Aluminum Radiator - Track-tested and street-readythe ULTIMATE cooling system upgrade for your N54 or N55! - Turner Motorsport - BMW

Track-tested and street-ready—the ULTIMATE cooling system upgrade for your N54 or N55! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
10X Entries For Our Spin To Win Sweepstakes!
For vehicles with manual transmission only

Brand:
Turner Motorsport - Corporate Logo
ES#:
4839753
Mfg#:
004443LA01
Ships on Sep 14, 2026
Auto Notify
ON SALE!
$604.99

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

$586.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

N54/N55 Low Temp Oil Thermostat Kit - 70c

ES#4817856 - n54n55ltKT - N54/N55 Low Temp Oil Thermostat Kit - 70c - New billet thermostat cover, hardware and gasket. Featuring a low temp thermostat - 40 degrees Celsius/ 72 degrees Fahrenheit lower than factory. - Assembled By ECS - BMW

New billet thermostat cover, hardware and gasket. Featuring a low temp thermostat - 40 degrees Celsius/ 72 degrees Fahrenheit lower than factory. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4817856
Mfg#:
N54N55LTKT
Back Ordered
Auto Notify
ON SALE! SAVE 18%
$152.99

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

$125.58 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Aluminum Coolant Bleeder Screw

ES#2739096 - 003530ECS01A - Heavy Duty Aluminum Coolant Bleeder Screw - Offering superior fatigue resistance over conventional plastic screws. Say goodbye to snapped and mangled bleeder screw heads! - ECS - BMW MINI

Offering superior fatigue resistance over conventional plastic screws. Say goodbye to snapped and mangled bleeder screw heads! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2739096
Mfg#:
003530ECS01A
In Stock
ON SALE! SAVE 25%
$35.99

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

$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 16" Electric Fan - Black

ES#2652188 - 30102049 - Universal 16" Electric Fan - Black - 2024 CFM. High performance puller fan with curved blades. - Spal - Audi BMW MINI

2024 CFM. High performance puller fan with curved blades. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spal - Corporate Logo
ES#:
2652188
Mfg#:
30102049
In Stock
$207.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Fan Controller Kit

ES#2816698 - MMFANCNTLUPROBE - Adjustable Fan Controller Kit - Fine-tune your cooling system - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Fine-tune your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2816698
Mfg#:
MMFANCNTLUPROBE
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.

$98.00

This product was last offered at the strikethrough price on
06-19-2026

$88.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MSL Oil Thermostat Installation Kit

ES#4759539 - 030210012 - MSL Oil Thermostat Installation Kit - Prevent oil leaks when installing your new Mosselman MSL Oil Cooler. - Mosselman Turbosystems - BMW

Prevent oil leaks when installing your new Mosselman MSL Oil Cooler. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mosselman Turbosystems - Corporate Logo
ES#:
4759539
Mfg#:
030210012
In Stock
$27.99 USD
Free Shipping
on orders $49 and up

Universal 16" Electric Fan - Black

ES#2764562 - MMFAN16 - Universal 16" Electric Fan - Black - 1934 CFM - 10.8 amps at 12.14 volts - Mishimoto - Audi BMW Volkswagen MINI

1934 CFM - 10.8 amps at 12.14 volts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764562
Mfg#:
MMFAN16
In Stock
$115.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Cooling Parts

Oil coolers and transmission coolers help keep fluid temperatures in check on the street and track. Replace leaky or failed oil coolers and transmission coolers with an OEM or aftermarket unit to get back on the road or upgrade to a performance oil cooler or transmission cooler for better temperature control.

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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