Description
Part Number: WN0040B
Meziere -20 AN O-Ring to -16 AN Male Straight Water Neck Adapter – Blue
Engineered for high-performance automotive cooling systems, the Meziere WN0040B water neck adapter seamlessly transitions a -20 AN straight-cut O-ring port to a male -16 AN flare fitting with maximum flow and a leak-free seal.
Key Features & Benefits
- ☑ Precision CNC-Machined: Crafted from high-strength billet aluminum to withstand race-level cooling system pressures and engine vibration.
- ☑ Blue Anodised Finish: Provides superior corrosion protection and a professional race-bay finish.
- ☑ Positive O-Ring Sealing: Incorporates a -20 AN straight cut male O-ring port thread for effortless, reliable sealing without sealant.
- ☑ O-Ring Included: Comes supplied with a high-temperature rubber O-ring seal ready for immediate installation.
- ☑ High-Flow Straight Profile: Optimises coolant flow paths between Meziere water necks and custom -16 AN plumbing.
Technical Specifications
| Manufacturer | Meziere Enterprises |
|---|---|
| Part Number | WN0040B |
| Fitting Category | Water Neck / Hose Fitting Adapter |
| Fitting Angle | Straight |
| Port Connection (Side 1) | -20 AN Male Straight Cut O-Ring Port |
| Hose Connection (Side 2) | -16 AN Male Flare |
| Material | Billet Aluminum |
| Finish | Blue Anodised |
| O-Ring Included | Yes (Rubber) |
What’s Included in the Box
- 1x Meziere WN0040B Straight Water Neck Adapter (-20 AN O-Ring to -16 AN Male, Blue)
- 1x Premium High-Temp Rubber O-Ring Seal
Meziere Enterprises is trusted globally in professional motorsport for precision cooling hardware. As a leading UK performance stockist, JP Racing supplies authentic Meziere components with expert support and swift UK shipping.


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