Old Part Numbers: 131B, MF131B, BG1-M-135Air compressor pilot unloader valve. The pilot/unloader valve is the "brains" of the air compressor and senses the tank pressure to load and unload the unit.Specifications Cut-In/Cut-Out PSI: 105/135 PSI 1/4"...

Old Part Numbers: 36500300CHCrankcase Breather with O-ring.

Old Part Numbers: 3168Air compressor pressure switch/manifold pipe plug, 1/4"-18 male NPT. A very common hex plug used on countless air compressors, this 1/4" NPT countersunk hex plug installs into any fitting or manifold that has an extra 1/4" female...

Old Part Numbers: MF192EGX160K1QXThrottle control for Rolair and MasterForce units. Mounts above on/off switch and tells the engine when to speed up or slow down. Replace if yours is sticking or leaking.Technical DocumentsClick here for installation...

Old Part Numbers: K18REPKIT/10, K18REPKIT/30Kit includes most parts needed for a full air compressor pump rebuild: Gasket Set, Oil Sight Glass, Oil Breather/Dipstick, Rings, Air Filter, Reed Valves, and Blended Synthetic Compressor Oil (order 2 pair of...

Aluminum Block Manifold (5-way).

Qty: 1. Order 4 for a complete set.

Old Part Numbers: 1312100129Air compressor V-Belt, 4L510, 51" circumference. Replace if frayed or slipping.Specifications A-type belt, 1/2" wide Outside Dimension: 51" "A" Belt Conversion: A49