11243-82141 Hydraulic Clutch Friction Plate — Wet Clutch Pack Disc for Forklift Powershift Transmission

This 11243-82141 is a hydraulic clutch friction plate for the wet multi-plate clutch packs inside forklift powershift (automatic) transmissions — a different application from the dry manual clutch friction discs that operate in open air. In a powershift transmission, forward and reverse gears are engaged by hydraulically compressing alternating layers of friction plates (splined to the shaft hub) and steel separator plates (tanged to the housing). This plate is one of those friction layers: it carries a cellulose-based wet friction material on both faces, operates fully submerged in automatic transmission fluid at 80-100°C, and must maintain consistent friction coefficient through millions of engagement cycles. The 11243-82141 part number identifies this as an OEM-spec replacement for specific Toyota, Komatsu, and TCM powershift transmission models where the friction plate dimensions and friction compound formulation are calibrated to the transmission’s hydraulic apply pressure and torque capacity.

The most common diagnostic confusion with this plate — and the mistake that leads to unnecessary transmission rebuilds — is misidentifying transmission slip as a “bad friction plate” when the actual cause is low hydraulic apply pressure from a worn pump or leaking piston seals. The friction plates in a powershift transmission almost never fail suddenly; they wear progressively over 3,000-5,000 hours, and the first symptom is delayed engagement when the transmission is cold (the thicker cold ATF can’t flow through the worn plates fast enough to build clamping pressure). If the transmission slips when hot but engages fine when cold, the friction plates are worn. If it slips in all conditions equally, the problem is hydraulic pressure, not the plates. Replacing friction plates into a transmission with a weak pump or leaking piston seals wastes the new plates because they will never receive full clamping pressure and will glaze over within the first 50 hours. Before ordering, verify that your transmission’s main line pressure meets specification — measure at the test port with a pressure gauge at idle and at stall speed.

Direct OEM replacement for Toyota, Komatsu, and TCM 2-3.5 ton powershift forklifts specifying part number 11243-82141. Always measure your existing plate thickness with a micrometer before ordering — if below 80% of new thickness spec, replace the complete set. Replace steel separator plates if they show heat discoloration or measure below minimum thickness. Flush the transmission, replace both internal and external filters, and fill with the manufacturer-specified ATF. Browse our transmission parts category. Reference OEM at Heli official website.

Technical Specifications

• SKU: 11243-82141
• Key Differentiator: OEM 11243-82141 hydraulic wet clutch friction plate — for powershift transmissions. Verify transmission line pressure before replacing plates to rule out hydraulic circuit faults.
• OEM Number: 11243-82141
• Type: Wet Multi-Plate Clutch Friction Disc — Powershift Transmission
• Material: Cellulose-Based Wet Friction Compound — ATF Submerged, 80-100°C
• Application: Toyota, Komatsu, TCM 2-3.5 Ton Powershift Forklifts
• Warranty: 12 Months

Compatible Forklift Models

Kingstream 11243-82141 friction plates are individually oil-paper wrapped, packed in rigid cartons. QC: thickness measurement, friction material bond check, tooth count verification. 12-month warranty. Contact us with your transmission model for fitment verification or fleet pricing.