Ford Windsor engine owners, this copper extension adapter solves clearance issues when installing oil pressure gauges! Specifically designed for 260, 289, 302, and 351 V8 Windsor engines where space gets tight between the mechanical fuel pump and oil filter. The 115mm length (about 4.5 inches) gives you just enough room to properly install your oil pressure or temperature sender without interference. It's made from high-quality copper that resists corrosion and handles heat well, with 1/4 inch NPT male threads on the bottom and female on top. The angled design is smart engineering that ensures proper clearance in those cramped engine bays. Installation is straightforward if you're comfortable working with engine components - just make sure your engine is cool and you've got the right sealant for the threads. This isn't some cheap knockoff - it's manufactured to original factory standards so you know it'll fit and function properly. Solves a common problem for Windsor engine enthusiasts trying to add aftermarket gauges. Definitely double-check your specific engine model before ordering, but if you've got a Windsor V8, this little adapter makes gauge installation so much easier!