Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i
Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i is a direct-fit replacement with OEM-quality construction, priced at $187.92. Designed for turbocharged inline-six BMW engines, it ensures precise thermal management and reliable cooling performance for daily drivers and performance-tuned models.
● In stock
Buy at Lab Work Auto →Price and availability may change. Click to see current details on Lab Work Auto.
Key features
- Direct fit for N54 and N55 3.0L engines
- Includes thermostat and 3 mounting bolts
- Brand new, not remanufactured
- Matches OEM electrical and flow specs
- Replaces multiple OEM part numbers
- Designed for turbocharged BMW models
- Verify thermostat type by visual match
Pros
- +Complete kit saves time and cost
- +High reliability for turbocharged engines
- +OEM-matching performance and fit
Cons
- −Thermostat type must be verified visually
- −Not for non-turbo or older BMW engines
About Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i
What is Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i?
The Labwork Electric Engine Water Pump W/ Thermostat is a complete cooling system solution engineered specifically for BMW N54 and N55 3.0L turbocharged inline-six engines found in models like the 135i and 335i. This assembly integrates an electric water pump with a thermostat to deliver accurate temperature control, prevent overheating, and support optimal engine efficiency. Built to match OEM specifications, it's a reliable replacement for aging or failed factory units, especially critical in high-stress turbocharged applications where thermal management is essential.
Key features
- Direct Fit Replacement — Designed to match OEM dimensions and mounting points for N54 and N55 engines.
- Includes Thermostat — Comes with a compatible thermostat; two types exist—verify by visual comparison before installation.
- Complete Hardware Kit — Includes 3 installation bolts for hassle-free setup.
- OEM-Compatible Design — Matches factory flow rate and electrical interface for seamless integration.
- High-Quality Construction — Built to withstand the thermal and mechanical demands of turbocharged BMW engines.
- Replacement for Key Part Numbers — Cross-references major OEM and aftermarket identifiers for accurate fitment.
- Brand New Unit — Not remanufactured, ensuring full service life from installation.
Who is Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i for?
This product is ideal for BMW owners and independent mechanics maintaining or repairing N54 and N55-powered vehicles such as the 135i, 335i, and related models. It suits DIYers with intermediate mechanical skills and professionals seeking a trusted, ready-to-install solution. Given the known reliability concerns with factory electric pumps on these engines, this unit serves as a durable upgrade during scheduled maintenance or failure repair.
How does Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i compare?
Compared to standard repair kits that sell the pump and thermostat separately, this Labwork unit offers a cost-effective bundled solution with verified compatibility. It outperforms remanufactured or generic pumps in build quality and longevity, while matching OEM performance without the dealership price tag. Unlike mechanical water pumps used in non-turbo engines, this electric version enables precise coolant control, essential for turbocharged BMW powertrains.
Best use cases
- →Replacing failed N54 electric water pump
- →Scheduled maintenance on 335i cooling system
- →Upgrading from worn OEM unit
- →Repairing overheating in 135i models
- →Performance tune prep for N55 engine
Is Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i right for you?
Buy this if you own an N54 or N55-powered BMW and need a reliable, complete water pump and thermostat replacement. Ideal for DIYers with intermediate skills or mechanics. Verify your thermostat type by comparing images. Consider this over separate components for better value and compatibility assurance. Alternatives include pricier OEM dealerships or riskier used units.
How it compares: Compared to generic or remanufactured pumps, this Labwork unit offers better durability and fit. It's more cost-effective than buying pump and thermostat separately from OEM sources, while delivering equivalent performance for turbocharged BMW inline-six engines.
More from Lab Work Auto
#63P-81950-00-00 TRIM RELAY For YAMAHA OUTBOARD F150 & 250 Part
$17.80
(4 pcs) For Ford F-150 Bed Interface Plates Standard Tie Down FL3Z9928408AB
$16.82
-6 An X 5/16-24 O Ring Hydroboost Spittier/Return Port Fitting Car Accessories
$8.20
-6AN AN6 Fuel Adapter Fitting to 3/8 Quick Connect LS W/ Clip Female Black GM
$7.91Frequently Asked Questions
What engines does this water pump fit?
▾
This pump fits all BMW N54 and N55 3.0L turbocharged inline-six engines, including those in 135i, 335i, and related models. Confirm compatibility with your specific vehicle's engine code.
Does the kit include a thermostat?
▾
Yes, it includes one thermostat and three installation bolts. Note there are two thermostat types—compare the included unit visually to your original to ensure correct fit.
How do I know which thermostat I need?
▾
Compare the physical design and housing shape of the included thermostat to your current unit. Refer to product images or consult a BMW parts diagram to confirm match.
Is this an OEM replacement part?
▾
It's a direct-fit replacement matching OEM specifications and cross-references multiple factory part numbers, but it is manufactured by Labwork, not BMW.
Can I install this myself?
▾
Yes, if you have intermediate mechanical experience. The job requires cooling system drainage, electrical disconnection, and precise reassembly to prevent leaks or air pockets.
How much does Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i cost?
▾
Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i is $187.92 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i in stock at Lab Work Auto?
▾
Yes, Labwork Electric Engine Water Pump W/ Thermostat For BMW N54 N55 3.0L 135i 335i is currently in stock at Lab Work Auto.
Specifications
- SKU
- F8-012735