Description
Meziere WN2041S Extended -20AN Water Pump Fitting
Extended 4.28″ billet aluminum adapter fitting designed for precision cooling system plumbing on high-performance race engines.
Overview & Performance Advantages
Engineered by Meziere Enterprises, the WN2041S extended water neck adapter fitting solves complex plumbing clearance challenges in high-end motorsport cooling setups. Designed to fit block-mounted and remote electric water pumps equipped with WN-style porting, this 4.28″ extended fitting provides necessary clearance around tight engine bays, timing covers, pulleys, and structural chassis components.
Machined from premium USA-sourced billet aluminum and finished in a durable black anodized coating, the WN2041S features a male -20AN O-ring boss (ORB) inlet with an included high-temperature O-ring for positive, leak-free sealing. The outlet side features a standard male -20AN 37-degree flare connection, making it straightforward to integrate heavy-duty braided lines into your vehicle’s cooling circuit.
Key Features
- ☑ 4.28″ Extended Length: Provides critical extension to clear front-end engine accessories and tight engine compartments.
- ☑ Dual -20AN Architecture: Features male -20AN O-ring port (ORB) pump connection and male -20AN flare plumbing outlet.
- ☑ Precision Billet Construction: CNC-machined from high-strength aluminum alloy for lightweight performance and absolute reliability.
- ☑ Black Anodized Finish: Superior corrosion resistance and sleek motorsport appearance.
- ☑ Complete Leak-Free Seal: Includes high-temperature O-ring seal designed to withstand extreme cooling pressures and thermal cycles.
Technical Specifications
| Manufacturer | Meziere Enterprises |
|---|---|
| Part Number | WN2041S |
| Fitting Category | Water Neck / Water Pump Adapter Fitting |
| Overall Length | 4.28″ (108.7 mm) |
| Primary Inlet Connection | Male -20AN O-Ring Port (ORB / WN Style) |
| Secondary Outlet Connection | Male -20AN Flare (37-Degree) |
| Material | Billet Aluminum |
| Finish | Black Anodized |
| O-Ring Included | Yes |
What’s Included in the Box
- 1 x Meziere WN2041S Extended -20AN Adapter Fitting (Black)
- 1 x High-Temperature -20AN Sealing O-Ring
At JP Racing, we supply full range professional cooling components to UK builders, racers, and track day enthusiasts. Buy with complete confidence backed by fast UK dispatch, competitive pricing, and expert technical guidance from our experienced motorsport support team.






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