RK351A-L-THK
Rebuild Kit for 351 With Thick Yoke
SAF-Holland

Targeted rebuild package designed for models featuring a thicker yoke variant provides a precise path to restoring the core locking interface. The thicker yoke geometry changes the actuation lever geometry and contact surfaces, so this kit focuses on restoring proper fit, alignment, and engagement timing to minimize play and unwanted chatter. As cycles accumulate in heavy-duty service, worn yoke components can lead to uneven wear on the kingpin interface and degraded jaw operation, compromising safety and performance. The kit aligns with standard fifth wheel configurations while addressing the unique dimensional needs of the 351 variant, ensuring compatibility and simpler maintenance workflows. VMRS 059-001-032 situates the item in the same family of rebuild components, while category context 42521 confirms its focus within the fifth wheel hardware subset. For best results, technicians should follow specified lubrication intervals and torque values, verify clearances after reassembly, and perform a functional test that mimics real-world coupling and uncoupling cycles. Cross references are not provided for this item.