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BMW E61 535xi N54 3.0L

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BMW E61 535xi N54 3.0L Radiator 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

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

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

ECS N54 Silicone Coolant Outlet Hose

ES#3552831 - 025216ECS01 - ECS N54 Silicone Coolant Outlet Hose - Retains OEM fitment with superior looks and durability! - ECS - BMW

Retains OEM fitment with superior looks and durability! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3552831
Mfg#:
025216ECS01
In Stock
ON SALE! SAVE 25%
$80.99

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

$60.74 USD
Free Shipping
on orders $49 and up
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

Water Wetter Coolant Additive - 12oz

ES#261427 - 80204 - Water Wetter Coolant Additive - 12oz - Reduces coolant temperatures by as much as 30*F - Redline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Reduces coolant temperatures by as much as 30*F affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Redline - Corporate Logo
ES#:
261427
Mfg#:
80204
In Stock
$15.99 USD
Free Shipping
on orders $49 and up

ECS Performance Coolant Outlet Hose Kit

ES#3579656 - 024797ECS03 - ECS Performance Coolant Outlet Hose Kit - Upgrade to a much more durable connection from your thermostat to your cylinder head! - ECS - BMW

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

Brand:
ECS - Corporate Logo
ES#:
3579656
Mfg#:
024797ECS03
In Stock
ON SALE! SAVE 15%
$116.99

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

$99.44 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

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

Universal 16" Low Profile Electric Fan

ES#3706751 - 30100400 - Universal 16" Low Profile Electric Fan - 1300 CFM. High performance pull fan with straight blades - Spal - Audi BMW MINI

1300 CFM. High performance pull fan with straight blades affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spal - Corporate Logo
ES#:
3706751
Mfg#:
30100400
In Stock
$111.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Low Temp Oil Thermostat Kit - N54/N55

ES#4428270 - 090743ECS09 - Low Temp Oil Thermostat Kit - N54/N55 - Control those oil temps with a new thermostat! - ECS - BMW

Control those oil temps with a new thermostat! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For 2008 and up models only

Brand:
ECS - Corporate Logo
ES#:
4428270
Mfg#:
090743ECS09
Ships in 3 Business Days
ON SALE! SAVE 25%
$79.99

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

$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Spal Electric Fan Harness with Relay - 185 Degree

ES#4147266 - 185FH - Spal Electric Fan Harness with Relay - 185 Degree - Single Fan 40amp relay wiring harness kit - 185 degree on/165 degree off with Sending unit - Spal - Audi BMW MINI

Single Fan 40amp relay wiring harness kit - 185 degree on/165 degree off with Sending unit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spal - Corporate Logo
ES#:
4147266
Mfg#:
185FH
In Stock
11% off MSRP

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

$186.99

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

$165.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Black Market Parts (BMP) Transmission Cooler Fitting (Pair)

ES#4883052 - 2x601-0002 - Black Market Parts (BMP) Transmission Cooler Fitting (Pair) - The Black Market Parts Transmission Cooler Fitting, compatible with many BMWs, is a modular design that allows for easy connection to the factory lines for adding an aftermarket transmission cooler. Two are typically required. - Precision Raceworks - BMW

The Black Market Parts Transmission Cooler Fitting, compatible with many BMWs, is a modular design that allows for easy connection to the factory lines for adding an aftermarket transmission cooler. Two are typically required. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4883052
Mfg#:
2X601-0002
Ships in 5 Business Days
$71.99

This product was last offered at the strikethrough price on
01-22-2026

$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Radiator Parts

Keep it cool with a new radiator or upgrade for better cooling capacity with aftermarket performance radiator options.

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