Engine Protection You Can Trust

When you’re building or maintaining a performance engine, the oil filter is one of those small components that makes a massive difference. The GReddy OX-04 Oil Filter (GRE13901104) is designed specifically for engines that demand superior filtration and reliable oil flow, whether you’re daily driving, chasing redline, or running hard at the track.

Precision Fit for Popular Platforms

The OX-04 is built with an M20xP1.5 thread and measures 68mm x 65mm, making it a direct fit for some of the most beloved performance engines. Popular applications include:

• Nissan VQ & SR series engines

• Mazda BP & 13B rotary engines

• Honda ZC & B16 platforms

If you’re running one of these setups, this filter was designed with your engine in mind.

Built Stronger, Built Smarter

Unlike off-the-shelf filters, the GReddy OX-04 prioritizes performance and protection. Its advanced filtration media provides greater efficiency, catching harmful contaminants without restricting flow. The reinforced construction also means it can handle the heat and pressure of high-performance driving—something cheap filters simply can’t guarantee.

Reliable Protection for Street and Track

Whether you’re wringing out a turbocharged Nissan SR20, fine-tuning a Mazda 13B rotary, or keeping a Honda B16 singing at high RPM, oil pressure and cleanliness are critical. The GReddy OX-04 Oil Filter is engineered to deliver consistent performance in both everyday driving and demanding motorsport conditions. That’s why GReddy remains a trusted name among enthusiasts worldwide.

Why Choose GReddy?

GReddy has built its reputation on producing parts that balance innovation with reliability. From exhaust systems to oil coolers and filters, their components are made with one purpose: helping performance cars run stronger, safer, and longer. The OX-04 is no exception—small part, big peace of mind. Visit the store to view our parts selection now!