View 1 Photo View 0 Videos Used Mack 12 Speed Transmission Shifter Knob, Part # 20QE398 313180 Recently Updated $250 USD used Mack 12 Speed Transmission Shifter Knob. Air operated selector has hi, low, neutral and reverse thumb selector. May fit other transmission models. (not actual picture), Serial#:... ConditionUsedFits To Make(s)MackFits To Model(s)MH613Will Fit Year(s)1990Part Number20QE398 313180Stock NumberP-60827 MLS Number13373857CategoryTransmission Parts Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Mack Clutch Shaft, Part # 604KC31 Recently Updated $59.95 USD NEW MACK SURPLUS CLUTCH SHAFT PART# 604KC31 SOLD AS IS NO WARRANTY ConditionNewPart Number604KC31Stock Number604KC31 MLS Number11132297CategoryTransmission Parts Last Updated5/14/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos New Mack Right Idler Shaft Assembly, Part # 7623-GS4757 Recently Updated $31.95 USD NEW MACK SURPLUS RH IDLER SHAFT ASSY PART# 7623-GS4757 SOLD AS IS NO WARRANTY ConditionNewPart Number7623-GS4757Stock Number7623-GS4757 MLS Number11127090CategoryTransmission Parts Last Updated5/14/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Mack Needle Roller Bearing, Part # 21380755 Recently Updated $19.95 USD NEW MACK SURPLUS NEEDLE ROLLER BEARING PART# 21380755 SOLD AS IS NO WARRANTY ConditionNewPart Number21380755Stock Number21380755 MLS Number11125591CategoryTransmission Parts Last Updated5/14/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Mack Shift Boot, Part # 25159806 Recently Updated $31.95 USD NEW MACK SHIFT BOOT PART# 25159806 ConditionNewPart Number25159806Stock Number25159806 MLS Number11122356CategoryTransmission Parts Last Updated5/14/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Mack Pilot Bearing for Transmission, Part # 5206-2HRLD 5206 Recently Updated $64.67 USD PILOT BEARING FOR MACK TRANSMISSION, Serial#: 5206, Casting#: 5206 ConditionNewPart Number5206-2hrld 5206Stock Number5206 MLS Number10154303CategoryTransmission Parts Last Updated5/14/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Mack Clutch Release Shaft, Part # PAI 604KC31 $50.10 USD CLUTCH RELEASE SHAFT Quantity2ConditionNewFits To Make(s)MACKFits To Model(s)ALLStock NumberPAI 604KC31 MLS Number14217221CategoryTransmission Parts Last Updated5/6/2026 LocationTampa, FL, US Sold ByLKQ Heavy Truck (855) 905-___ SHOWNUMBERCall Seller Email Seller Save More Info