View 2 Photos View 0 Videos Spicer (TTC) 1241C Auxillary Transmission for a 1977 Western Star 4900 $5,295 USD REFURB AUXILLARY TRANSMISSION SPICER 1241C 6 MONTH PARTS ONLY WARRANTY. EXTENDED WARRANTY AVAILABLE, Serial#: GET, Core Charge: 1500.00, Engine Make: Cummins, Engine Model: NTA400 ConditionUsedEngine ModelCummins NTA400Fits To Make(s)Western StarFits To Model(s)4900Will Fit Year(s)1977Stock Number91525-3 MLS Number13820077CategoryAuxillary Transmissions Last Updated1/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info