ATP Parts SMS-9 Automatic Transmission Master Repair Kit

Automatic Transmission Master Repair Kit

Restore a worn automatic transmission with the ATP Parts SMS-9 Master Repair Kit Plus. This kit brings together the friction and steel clutch plates, gaskets, seals, o-rings, sealing rings, sump filter, and commonly replaced bushings needed for a quality transmission rebuild.

Built for broad GM fitment across classic Chevrolet, GMC, Buick, Oldsmobile, Pontiac, and Cadillac applications, the SMS-9 is a practical choice for THM350C service work and related rebuilds. It is a direct-fit service kit for many rear-wheel-drive and 4x4 vehicles from 1979-1986.

• ATP Parts SMS-9 automatic transmission master repair kit
• Includes friction and steel clutch plates, gaskets, seals, o-rings, sealing rings, sump filter, and commonly replaced bushings
• Supports transmission rebuilding on many GM passenger cars, vans, SUVs, and trucks
• Fits select Chevrolet C10, K10, G10, and Suburban applications
• Fits select GMC C1500, K1500, G1500, and Jimmy applications
• Cross-references Standard Ignition KS17 for the same application

Detailed Product Information

The ATP Parts SMS-9 is an automatic transmission master repair kit for service technicians and rebuilders who need the core wear items commonly replaced during overhaul. It is especially relevant for 1979-1986 Chevrolet and GMC platforms, including Chevrolet C10, K10, C20, G20, and GMC C1500, K1500, G1500, and K3500 models, plus additional Buick, Oldsmobile, Pontiac, and Cadillac applications. The part number SMS-9 is also associated with interchange references such as 44008D and SK100.

For buyers searching by vehicle, this kit covers long-tail applications such as an automatic transmission master repair kit for 1986 Chevrolet C10, a transmission rebuild kit for 1986 GMC C1500, and a THM350C service kit for 1986 Chevrolet C10 Suburban or K10 Suburban. It is also listed for classic GM cars including Chevrolet Camaro, Corvette, Malibu, Monte Carlo, Buick Regal, Oldsmobile Cutlass Supreme, Pontiac Firebird, and Cadillac DeVille.

Common Repair Uses

• Transmission slipping caused by worn friction materials
• Harsh or inconsistent shifting from aged seals and sealing rings
• Fluid leaks related to deteriorated gaskets, o-rings, or seals
• Poor hydraulic performance from a restricted or worn sump filter
• Rebuild service on high-mileage GM automatic transmissions

Installation Notes and Tips

Confirm transmission type before ordering, especially on 1986 Chevrolet and GMC Suburban applications that note THM350C only. Compare the original transmission components, case tags, and rebuild specifications before disassembly. Clean all hard parts thoroughly, inspect bushings and clutch surfaces for wear, and follow the transmission builder’s service procedure during assembly.

Quality Assurance

ATP Parts supplies this master repair kit with the wear items commonly required for a quality transmission rebuild. The included components are selected to support a complete service approach for the listed GM applications.