View 1 Photo View 0 Videos Caterpillar Head Bolt Kit for C15/C15 ACERT/3406E, Part # 340099 $384.70 USD NEW HEAD BOLT KIT, FITS C15 C15 ACERT AND 3406E. 1241855,1241854, 224-5126, Serial#: 340099, Core Charge: 0, Casting#: 340099 ConditionNewPart Number340099Stock Number340099 MLS Number14301673CategoryEngine Miscellaneous Parts Last Updated4/10/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos New Caterpillar Thermostat Housing Gasket for 3406E/C15/C16/C18, Part # 139-3550 $3.95 USD THERMOSTAT HOUSING GASKET. FITS MULTIPLE CAT 3406E C15 C16 C18 MODELS. REPLACES CAT 139-3550, Serial#: 139-3550, Core Charge: 0, Casting#: 139-3550 ConditionNewPart Number139-3550Stock Number331347 MLS Number14236521CategoryEngine Miscellaneous Parts Last Updated3/21/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos New Caterpillar 3406E Front Structure Gasket Kit, Part # 234-1866 $245.77 USD NEW 3406E CATERPILLAR FRONT STRUCTURE GASKET KIT. CATERPILLAR 1127992 CATERPILLAR 125-2428 CATERPILLAR 1252428 CATERPILLAR 126-9506 CATERPILLAR 1269506 CATERPILLAR 129-0433... ConditionNewPart Number234-1866Stock Number331416 MLS Number13724799CategoryEngine Miscellaneous Parts Last Updated3/21/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar 3406E Thermostat, Part # 201737 2R2911 4N2212 4W4794 $19.99 USD NEW THERMOSTAT. FITS MULTIPLE APPLICATIONS. 180%, Serial#: ....., Core Charge: 0, Casting#: ..... ConditionNewPart Number201737 2R2911 4N2212 4W4794 6I4954 9N3711 5N6242Stock Number181830 MLS Number10748709CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Caterpillar 3406E Fuel Filter Base, Part # 136-5017 $130 USD USED CAT FUEL FILTER BASE CAST# 136-5017, Serial#: NA ConditionUsedPart Number136-5017Stock NumberP-60930 MLS Number13963178CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar Fuel Injection O-Ring Kit for 3406E/C15/C16/C18 Engines, Part # 331241-150 $145.77 USD FUEL INJECTION O-RING KIT 331241-150 Caterpillar 3406E / C15 / C16 / C18 Series engine application, Serial#: NA ConditionNewPart Number331241-150Stock Number331241-150 MLS Number13311514CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Caterpillar 3406E Gear Train Steel Plate / Structure Plate, Part # 122-2227 $250 USD USED GEAR TRAIN STEEL PLATE/ STRUCTURE PLATE, Serial#: NA, Core Charge: NA, Casting#: 122-2227 ConditionUsedPart Number122-2227Stock Number102-2227 MLS Number13015977CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Used Caterpillar 3406E 2-GROOVE Pulley and Mount Bracket, Part # 126-8557 / 126-8551 $350 USD USED CAT 3406E PULLEY 2 GROOVE PART# 126-8557 AND MOUNT BRACKET 126-8551 MAY FIT OTHERS CHECK PART NUMBERS, Serial#: NA ConditionUsedPart Number126-8557/ 126-8551Stock NumberP-60712 MLS Number12971736CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar 3406E Intercooler Pressure Hose / Air to Air Piping for 2000 Freightliner Classic $45 USD INTERCOOLER PRESSURE HOSE/AIR TO AIR PIPING, Serial#: 1LW, Casting#: 1LW ConditionUsedEngine ModelCaterpillar 3406EFits To Make(s)FreightlinerFits To Model(s)CLASSICWill Fit Year(s)2000Stock NumberP-87 MLS Number9005110CategoryEngine Miscellaneous Parts Last Updated3/25/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar 3406E Air to Air Tubing / Intercooler Piping Hose, Part # 03-21262 0C TS848 $25 USD AIR TO AIR TUBING/INTERCOOLER PIPING HOSE, Serial#: 1LW, Casting#: 1LW ConditionUsedEngine ModelCaterpillar 3406EFits To Make(s)FreightlinerFits To Model(s)CLASSICWill Fit Year(s)2000Part Number03-21262 0C TS848Stock NumberP-86 MLS Number9005109CategoryEngine Miscellaneous Parts Last Updated3/25/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos New Aftermarket Injector Rocker Arm for Caterpillar 3406E/C15, Part # 20R3322 $155.85 USD NEW AFTERMARKET INJECTOR ROCKER ARM. FITS MULTIPLE CAT 3406E AND C15 ENGINE MODELS. THESE ARE THE NEWER STYLES WHEN CHANGING FROM THE OLDER STYLE YOU MUST INCLUDE THE NEW STYLE ADJUSTER,... ConditionNewPart Number20R3322 2781365 1032051 10R-1136 10R1180 10R4707 192-8215 218-2741 278-1365 207-5248Stock NumberS-28405 MLS Number11182143CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar Valve Rocker for C15 & 3406 Engines, Part # 108-5896 $75 USD GOOD USED VALVE ROCKER. FITS MANY CAT C15 3406 ENGINES., Serial#: 108-5896, Core Charge: 0, Casting#: 108-5896 ConditionUsedPart Number108-5896Stock Number108-5896 203-8821 MLS Number9709002CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Caterpillar Injector Cup Replacement Kit for 3406E C15 C16 C18, Part # 392091 $20.31 USD INJECTOR CUP REPLACEMENT KIT. FITS MULTIPLE CAT 3406E C15 C16 C18 MODELS. PRICE PER INJECTOR CUP, NEED 6 PER ENGINE. PICTURE REFERENCE # 10 392087 CUP ONLY INJECTOR SLEEVE, Serial#:... ConditionNewPart Number392091 2634920 9X7430 1662904Stock Number392091 MLS Number10183138CategoryEngine Miscellaneous Parts Last Updated3/22/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar 3406B-C15 Rod Bearing Set .010 Oversize, Part # 370018 9Y7735-010 $60.10 USD NEW ROD BEARING SET. EACH SET DOES 1 PISTON. FITS MOST 3406B-C15 NON ACERT ENGINES. OVERSIZED .010., Serial#: 6NZ 1LW 2KS, Core Charge: 0, Casting#: 370018 ConditionNewPart Number370018 9Y7735-010Stock Number370018 MLS Number11921070CategoryEngine Miscellaneous Parts Last Updated3/23/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos New Aftermarket Caterpillar 3406E/C15 Exhaust Rocker Arm, Part # 162-9175 $141.08 USD NEW AFTERMARKET EXHAUST ROCKER ARM. FITS MULTIPLE CAT 3406E AND C15 ENGINE MODELS., Serial#: 20R3321, Core Charge: 0, Casting#: 20R3321 ConditionNewPart Number162-9175 2038822 278-1364 2781364 4373869 3284240Stock NumberS-28473 MLS Number11182144CategoryEngine Miscellaneous Parts Last Updated3/23/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 1995 Caterpillar 3406E Peanut Cover, Part # 159-7191 $150 USD PEANUT COVER, Serial#: 159-7191, Casting#: 159-7191 ConditionUsedWill Fit Year(s)1995Part Number159-7191Stock NumberP-14558 MLS Number10738968CategoryEngine Miscellaneous Parts Last Updated3/23/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar Thermostat Housing Gasket for 3406E/C15/C16/C18, Part # 4N1156 $2.30 USD THERMOSTAT HOUSING GASKET. FITS MULTIPLE CAT 3406E C15 C16 C18 MODELS., Serial#: 4N1156, Core Charge: 0, Casting#: 4N1156 ConditionNewPart Number4N1156Stock Number331285 MLS Number10183137CategoryEngine Miscellaneous Parts Last Updated3/23/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Caterpillar 3406E Intercooler Piping / Air to Air Hose, Part # 01-22744 o ts $65 USD USED INTERCOOLER PIPING/ INTERCOOLER HOSE AIR TO AIR HOSE, Serial#: 1LW, Casting#: 1LW ConditionUsedEngine ModelCaterpillar 3406EPart Number01-22744 o tsStock NumberP-85 MLS Number9005108CategoryEngine Miscellaneous Parts Last Updated3/23/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos Used Caterpillar 3406E 40-PIN Cab-to-Engine ECM Harness for 1994 Freightliner FLD, Part # 5EK00527 $495 USD USED 3406E 5EK 40 PIN HARNESS FROM CAB TO ENGINE. 40 PIN ECM PLUG ON HARNESS., Serial#: 5EK00527, Core Charge: 0, Casting#: 5EK00527 ConditionUsedFits To Make(s)FreightlinerFits To Model(s)FLDWill Fit Year(s)1994Part Number5EK00527Stock Number100320 MLS Number14276843CategoryEngine Miscellaneous Parts Last Updated4/1/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info