2 0 Mack ETEC Engine Control Module (ECM) Recently Updated $275 USD Good used, cleaned and inspected Mack ETEC ECM. Part Number: 12MS48M2. 30 Day Guarantee for swap or refund if not programmable. ECM's need to be programmed for your application. ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number12MS48M2Stock NumberRyd 12MS48M2 MLS Number13377282CategoryEngine Control Modules (ECM) Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Mack ETEC Rocker Arm Recently Updated $40 USD Used take off Mack ETEC Rocker Assembly Quantity2ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart NumberMACK ETECStock NumberRyd MACK ETEC ROCKE MLS Number11187115CategoryRocker Arms Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 Mack ETEC Valve Cover Recently Updated $40 USD Good used, cleaned and inspected Mack ETEC Jake Spacers. Part number: 537GC56A Quantity3ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number537GC56AStock NumberRyd 537GC56A MLS Number10613486CategoryValve Covers Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Mack ETEC Engine Rod Recently Updated $40 USD Good used, cleaned and inspected Mack ETEC connecting rod, Part number: P5454267M. 30 Day guarantee for swap or refund. Quantity15ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart NumberP5454267MStock NumberRyd P5454267M MLS Number10610456CategoryEngine Rods Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 Mack ETEC Valve Cover Recently Updated $40 USD Good used, cleaned and inspected Mack ETEC valve cover, Part number: 337GB545 Quantity7ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number337GB545Stock NumberRyd 337GB545 MLS Number10610454CategoryValve Covers Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 Mack ETEC Valve Cover Recently Updated $40 USD Good used, cleaned and inspected Mack ETEC Valve Cover. Part number: 337GB537 Quantity3ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number337GB537Stock NumberRyd 337GB537 MLS Number10613471CategoryValve Covers Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Mack ETEC Rocker Arm Recently Updated $40 USD Used take off Mack Etech Rocker Assembly. Part number: 335-P2/53M/54M, Quantity10ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number335-P2/53M/54MStock NumberRyd 335P2/53M/54M MLS Number10607308CategoryRocker Arms Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Mack ETEC Rocker Arm Recently Updated $40 USD Used take off Mack Etech Rocker Assembly. Part number : 145GB335, Quantity4ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number145GB335Stock NumberRyd 145GB335 MLS Number10203927CategoryRocker Arms Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Mack ETEC Rocker Arm Price Drop $40 USD Used take off Mack Etech Rocker Assembly. Part number 335P2/473M/474A, Quantity8ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number335P2/473M/474AStock NumberRyd 335P2/473M/474A MLS Number10203919CategoryRocker Arms Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Mack ETEC Engine Harmonic Balancer Recently Updated $75 USD Good used, cleaned and inspected Mack ETEC Harmonic Balancer. Part Number: 404GB499A Quantity15ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number404GB499AStock NumberRyd 404GB499A MLS Number10204015CategoryEngine Harmonic Balancers Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 Mack ETEC Engine Control Module (ECM) Recently Updated $275 USD Good used, cleaned and inspected Mack ETEC ECM. Part Number: 12MS48M6. 30 Day Guarantee for swap or refund if not programmable. ECM's need to be programmed for your application. Quantity2ConditionUsedFits To Make(s)MACKFits To Model(s)ETECPart Number12MS48M6Stock NumberRyd 12MS48M6 MLS Number10205034CategoryEngine Control Modules (ECM) Last Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
7 0 Mack ETEC Engine Harmonic Balancer $75 USD (GOOD USED) OEM Mack Diesel Engine Harmonic Balancer, for sale!!! Part #: 404GB499A; Stock #: D1004 For more information about this listing, shipping, technical questions email us at... ConditionUsedPart Number404GB499AStock NumberD1004 MLS Number13245212CategoryEngine Harmonic Balancers Last Updated11/20/2024 LocationHialeah, FL, US Sold ByJJ Rebuilders Inc. (844) 385-___ SHOWNUMBERCall Seller Email Seller Save More Info
5 0 Mack ETEC Camshaft $1,000 USD (GOOD USED) Mack Diesel Engine ETEC PAI Camshaft, for sale!!!! Part #: 3999.V4649.0816, 001711; Stock #: CS1051 For more information about this listing, shipping, technical questions email... ConditionUsedStock NumberCS1051 MLS Number12870775CategoryCamshafts Last Updated5/15/2024 LocationHialeah, FL, US Sold ByJJ Rebuilders Inc. (844) 385-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 Mack ETEC Engine Part $450 USD USED MACK ETEC FRONT COVER. P/N: 333GB5131M ConditionUsedStock Number31177 MLS Number12813450CategoryEngine Miscellaneous Parts Last Updated5/1/2024 LocationCrandall, TX, US Sold ByTim Jordan's Truck Parts Inc. (833) 359-___ SHOWNUMBERCall Seller Email Seller Save More Info