FASWORX Water-Separating Fuel Filter & Spin-On Oil Filter for GM-Based Inboards & Sterndrives (3.0–8.2L) – MerCruiser/Volvo Penta/OMC

The FASWORX Water Separating Fuel Filter & Spin-On Oil Filter bundle is engineered for GM-based inboard and sterndrive engines across MerCruiser, Volvo Penta, OMC, and Crusader platforms. With remote spin-on filter bases, this kit is designed to be a practical upgrade that aligns with modern marine filtration needs.

Broad compatibility and OEM-like reliability

Designed to fit 1963 and newer GM-based inboards and sterndrives, covering 3.0L, 4.3L, 5.0L, 5.7L, 7.4L, 8.1L, and 8.2L engines. It serves as an OEM-direct replacement for several popular reference numbers, providing a familiar fit without guesswork during maintenance or part swaps.

Key brands supported include MerCruiser, Volvo Penta, OMC, and Crusader, all with remote spin-on filter bases. This compatibility breadth aims to simplify sourcing and help you keep service intervals on schedule.

Upgraded filtration for modern EFI systems

The bundle features a high-efficiency 10-micron water-separating fuel filter designed to trap fine debris before it enters EFI, MPI, or OptiMax fuel paths. Compared with standard 25-micron filters, this specification intends to reduce the amount of particulates that reach sensitive components, potentially supporting smoother operation under varied fuel conditions.

• May help minimize fuel-side contamination in EFI/MPI systems
• Designed to work with remote spin-on bases common in many marine installations

Oil filtration with anti-drain back

The kit pairs a premium spin-on oil filter with an integrated anti-drain back valve. When the engine is off, oil stays in the filter, which can help reduce dry starts and assist in quicker oil priming on startup.

• Anti-drain back valve helps maintain oil in the filter during shutdowns
• Direct-fit sizing reduces the need for extra adaptations during service

Direct-fit, no-mods installation

Direct-fit components are sized for straightforward installation: Fuel Filter uses 11/16" x 16 thread, and Oil Filter uses 13/16" x 16 NPT thread. The bundle is designed for typical remote spin-on bases, enabling a clean, efficient service experience.

What’s included

• One high-efficiency 10-micron water-separating fuel filter
• One premium spin-on oil filter with anti-drain-back valve

Whether performing routine maintenance, upgrading an aging filtration setup, or refreshing parts during a boat project, this kit is crafted to support reliable operation across a broad range of GM-based marine engines. While it does not guarantee results, the filtration improvements and direct-fit design aim to deliver practical benefits for everyday boating tasks.