Baldwin Filters B40136 Oil Filter Spin-On 3/4-16 Thread 10 Micron

Baldwin B40136 Spin-On Oil Filter

This Baldwin B40136 is a spin-on oil filter built with a 10 micron rating to trap fine particles in automotive and light industrial lubrication systems. It threads onto a 3/4-16 port and includes a 20 psid bypass valve plus an anti-drainback valve to maintain prime after shutdown. The unit is supplied new and carries California Proposition 65 notices for cancer and reproductive harm.

10 Micron Rating and 3/4-16 Thread Constraints

The 10 micron media targets smaller contaminants than coarser filters but creates higher flow restriction that can trigger the 20 psid bypass under cold starts or high-viscosity oil. The fixed 3/4-16 thread limits fitment to housings machined to that exact pitch; adapters or mismatched ports will leak. No other thread sizes or micron options are offered for this part number.

Build Quality and Daily Service Implications

The transparent housing lets technicians inspect element condition without removal while the spin-on design allows hand-tight installation and removal with a standard strap wrench. The integrated anti-drainback valve prevents dry starts by keeping oil in the filter between cycles. The bypass valve protects engine lubrication if the element clogs but means unfiltered oil circulates once the 20 psid threshold is reached.