B6Y1-14-302A Aftermarket Oil Filter — 1969–2011 Mazda RX-7 and RX-8 Rotary Engine
The B6Y1-14-302A is an aftermarket replacement oil filter compatible with Mazda rotary engines from 1969 through to the end of RX-8 production in 2011 — covering the complete range of 12A, 13B, and 13B-REW/MSP Wankel engines. This filter provides OEM-equivalent filtration to protect the eccentric shaft bearings, rotor journals, apex seal oil channels, and internal oil passages that are critical to rotary engine longevity and performance.
Why Oil Filtration Is Critical for Rotary Engines
Oil quality and filtration integrity are arguably more important on a Wankel rotary engine than on most piston engines. The apex seals, side seals, and corner seals all depend on clean, high-pressure oil delivery to maintain correct operating clearances and prevent accelerated wear. Particulate contamination in the oil system deposits in these narrow passages — particularly the apex seal oil grooves — where it restricts lubrication and accelerates seal wear. Regular filter replacement is the single most impactful maintenance action for rotary engine longevity.
Change Intervals for Performance Use
For track and competition use, change the oil filter at every oil change — and change oil more frequently than for road use. The rotary engine’s combustion design results in more fuel dilution of the oil than a typical piston engine, and the high sustained RPM of race use accelerates oil degradation. Arctic Performance Parts recommends following the guidance of an experienced rotary engine builder for competition service intervals based on your specific engine specification and use case.
Arctic Performance Parts — Rotary Engine Specialists
Arctic Performance Parts is part of Wankel Service AS, operated by a team with over 23 years of Mazda rotary engine building experience. We stock the rotary engine parts, oils, and consumables that the Scandinavian RX-7 and RX-8 community needs for road, track, and competition use.
Quality and Availability at Arctic Performance Parts
Arctic Performance Parts is the Norwegian-based specialist for Nuke Performance products, serving motorsport builders and performance enthusiasts across Norway, Sweden, and Denmark. Founded from Wankel Service AS — where the owner has rebuilt and tuned rotary and performance engines since 2003 — Arctic Performance Parts brings over 23 years of hands-on engineering experience to every product recommendation. Most Nuke Performance items are stocked for prompt despatch, with a supplier lead time of 1–2 weeks for extended quantities.
