IRONTREE Water Pump Kit for BMW 2.0–3.2L L6 Engines — Direct-Fit with Gasket, OE-Style Reliability

IRONTREE 252-284 is a complete replacement water pump kit with gasket engineered to restore coolant flow and sealing for many BMW 2.0–3.2L inline‑6 engines.

This kit includes one fully tested water pump and a matched gasket, built to meet OE fit and performance standards for a wide range of BMW 1, 3, 5, 6, 7, M, X and Z series models. Designed by an OEM manufacturer and quality‑checked for leaks and bearing life, the pump offers a direct swap-in solution to replace worn OEM units or failed assemblies. Below you’ll find concise answers to the most common buyer questions about fitment, performance, installation and warranty.

Which BMW models and engines will this pump fit?

The IRONTREE 252-284 kit covers many BMW vehicles equipped with 2.0L, 2.5L, 2.8L, 3.0L and 3.2L inline‑6 engines across multiple generations. Check engine code and production years carefully before ordering to confirm compatibility.

• Compatible families: 1 Series, 3 Series, 5 Series, 6 Series, 7 Series, M3, X3, X5, Z3, Z4, ActiveHybrid models
• Common model coverage: 320i, 323i, 325i/325ci, 328i/328ci, 330i/330ci, 525i, 528i, 530i, 535i, 740i, M3, X3/X5, Z3/Z4
• Engine types covered: 2.0L–3.2L L6, naturally aspirated and select turbocharged variants listed in the full fitment
• Always compare the pump part number and flange shape with the unit on your vehicle for final confirmation

How does this pump improve cooling system reliability?

IRONTREE pumps are manufactured to OE tolerances and undergo function and leakage testing, which reduces the risk of premature failure. Upgraded internal components like longer‑life bearings, reinforced housings and improved impellers maintain steady coolant circulation and sealing under normal operating conditions.

• Tested for leakage and rotational smoothness before shipping
• Improved bearing life and robust mechanical seal kit for reduced wear
• Impeller designed for consistent water flow and pressure
• Precision housing and gasket included for reliable sealing

What should I expect during installation and service life?

The kit is a direct replacement designed to match the original pump’s form, fit and function so professional or experienced DIY mechanics can perform a straightforward swap. Installation requires standard tools and coolant system bleeding; replace hoses and thermostat if worn to prevent repeat service.

• Direct-fit replacement, includes gasket for trouble‑free sealing
• Standard installation steps: drain coolant, remove old pump, clean mating surfaces, fit new pump and gasket, refill and bleed system
• Recommended to inspect belts, hoses and thermostat at the same time
• Follow torque specs and fill/bleed procedures specific to your BMW model

What warranty and support come with this pump?

IRONTREE backs the pump with a limited warranty to help protect against manufacturing defects and premature failures when installed and used as intended. Warranty duration may vary by region, so keep receipts and verify terms before installation.

• Included warranty: 3 years or 50,000 miles (terms apply)
• Factory direct pricing from the manufacturer to reduce markup
• Customer support available for fitment questions and claims
• Always register or retain purchase documentation for warranty claims

Who is this for: The IRONTREE 252-284 water pump kit is targeted at BMW owners, independent mechanics and restoration shops working on L6‑powered BMWs that need a reliable, OE‑style replacement. It’s especially useful when replacing failing pumps on vehicles with known cooling system age or when performing preventive maintenance on higher‑mileage inline‑6 engines. If you want a tested direct‑fit pump with upgraded internals and a multi‑year warranty, this kit is a practical option.

Package contents: 1 x IRONTREE water pump and 1 x gasket. Confirm vehicle compatibility using engine displacement and production year before purchase.