Wix 51515R Wix Racing Oil Filter Ford V8 Windsor & Cleveland Z9

Wix 51515R Racing Oil Filter for Ford V8 Windsor & Cleveland

Designed for performance Ford V8s and built to protect powerful engines without sacrificing oil flow, the Wix 51515R filters oil for classic Windsor and Cleveland motors, including Windsor 289, 302, 351 and Cleveland 302, 351, as well as 429–460 big-blocks. It also meets or exceeds expectations for other applications in the same class, making it a reliable upgrade or replacement that’s equivalent to Ryco Z9.

Why it’s built for performance

• Media: Enhanced cellulose for robust filtration and consistent dirt separation.
• Filtration rating: 61.00 micron effectiveness, helping protect bearings and tolerances from contaminants.
• Anti-drain back valve: Yes — minimizes dry starts by keeping oil in the filter when the engine is off.
• Bypass relief valve setting: 8–11 — provides engine protection in low-oil-pressure situations.
• Flow capacity: 28 GPM, supporting high-performance engines and steady oil circulation.
• Construction: Spin-On lube filter for quick, tool-free replacement.

Key specifications

• Height: 5.170 in
• Outer diameter (top): 3.600 in
• Inner diameter (top): Closed
• Media material: Enhanced cellulose
• Micron rating: 61.00 micron
• Style: Spin-On lube filter
• Thread size: 3/4-16 in
• Duty type: LD
• Class: A
• Anti-drain back valve: Yes
• Compatible with: Early Ford V8 Windsor and Cleveland engines; 289, 302, 351 Windsor; 302, 351 Cleveland; 429-460 big-block and similar equivalents

Compatibility and use cases

Ideal for enthusiasts upgrading a classic Ford V8 or building a performance-focused daily driver. Whether restoring a Windsor-powered hot rod or pairing with a Cleveland-powered build, this filter maintains strong oil flow while delivering dependable filtration to protect bearings under high RPM, loaded conditions.

Installation tips

• Replace with a filter of the same thread size (3/4-16 in) and similar height for proper fitment.
• Ensure the mounting surface is clean and the gasket seals properly during installation.
• Confirm oil pressure is within normal range after installation and monitor for any leaks.