Earl's Performance Oil Filter Block-Off Adapter

Earl's Performance Oil Filter Block-Off Adapters are precision-machined components designed to eliminate the factory oil filter from its original mounting location, redirecting oil flow to a remotely positioned filter. These adapters are an essential solution for engine swaps, custom chassis builds, and performance installations where the stock oil filter position conflicts with crossmembers, suspension components, or other chassis hardware.

How It Works:

The block-off adapter threads directly onto the engine block in place of the factory oil filter, sealing off the OEM mounting surface cleanly and securely. The existing NPT ports on the block near the factory filter location are then used to plumb AN hose lines to a remote filter mount — keeping oil circulating through a full-size filter without the spatial constraints of the stock location.

Key Features:

• Threads directly onto the engine block in place of the factory oil filter for a clean, low-profile block-off solution
• Compatible with existing NPT ports on the block for straightforward remote oil filter plumbing via AN hose fittings
• Precision-machined aluminum construction for an excellent strength-to-weight ratio
• Corrosion-resistant anodized finish for long-term durability and a professional appearance
• Available in multiple thread configurations to suit a range of engine applications
• Legal for use on emissions-controlled, uncontrolled, and racing-use-only vehicles

Part of the Holley family of brands, Earl's Performance has built a decades-long reputation for precision fluid system components across street performance, hot rod, and motorsports applications. These block-off adapters reflect that same commitment to quality engineering, making them a trusted choice for builders who demand reliable oil system performance in demanding custom and swap builds.