Eaton Fuller master valve repair kit K-1921 or K1921 rebuilds the transmission range control master valve on Fuller manual transmissions. This is a complete service kit that includes the small parts needed to refresh the master valve: two 5/32 steel balls, an O-ring retainer, two O-rings, three compression springs, a wave washer, and grease for reassembly. It cross-references to numbers including 15511242, 27090-5289, 3088-K1921, 4614136, 596627C91, S-9405, K1921-SP, and ZBFK1921. A genuine Eaton part sold by Pro Gear and Transmission. Not sure this is your part? Give us a call to confirm proper fit for your application.

• Part type: Master valve repair kit
• Application: Eaton Fuller manual transmission range valve
• Kit balls: 5/32 steel, qty 2
• O-rings: qty 2, plus O-ring retainer
• Compression springs: qty 3
• Wave washer: qty 1
• Grease: included

Kit BOM (Eaton): 20102 ball 5/32 steel x2, 20103 O-ring retainer x1, 20104 O-ring x2, 20109 compression spring x1, 20110 compression spring x2, 22113 wave washer x1, 71218 grease x1, L-2396 letter x1.
Cross references: 15511242, 27090-5289, 270905289, 3088-K1921, 3088K1921, 4614136, 596627C91, FUL K1921, K1921-SP, K1921SP, S-9405, S9405, ZBFK1921.