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 2 Photos View 0 Videos New Exhaust Manifold Gasket Fits Caterpillar 3406A/B/C, Part # 129-9452 $3.99 USD NEW EXHAUST MANIFOLD GASKET. FITS CATERPILLAR 3406 A /B /C. TAKES 6 TO DO COMPLETE INSTALLATION., Serial#: 129-9452, Core Charge: 0, Casting#: 129-9452 ConditionNewPart Number129-9452 1052873 7W5978 7W9108 9Y4582Stock Number331291 MLS Number9915505CategoryEngine 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 Primer Pump Hand, 3300 Series Application, Part # 380151 137-5541 380151-100 331269 $45.31 USD Primer Pump Hand Caterpillar 3300 Series application, Serial#: 380151 137-5541 380151-100 331269, Core Charge: 0, Casting#: 380151 137-5541 380151-100 331269 ConditionNewPart Number380151 137-5541 380151-100 331269Stock Number380151 MLS Number10122493CategoryEngine 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 3406B Rocker / Engine Brake Housing, Part # 7C0061 $200 USD USED ROCKER / ENGINE BRAKE HOUSING OFF CAT 3406B PART #7C0061, Serial#: N/A ConditionUsedPart Number7C0061Stock NumberP-60845 MLS Number13422928CategoryEngine 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/3406C Front Structure Gasket Kit, Part # 331409 $164.28 USD NEW FRONT STRUCTURE GASKET KIT. FITS MOST 3406B AND 3406C ENGINES. INCLUDES THE FOLLOWING 1006178 2W0459 446GC1109 1090078 4H6145 9H8872 1425867 4N0699 9L1633 146142 4N0933 1223772 4B2695... ConditionNewPart Number331409Stock Number331409 MLS Number11683131CategoryEngine 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 1 Photo View 0 Videos New Caterpillar 3406B Head Spacer Plate .339" Thickness, Part # 225-3100 / 2253100 / 360474 $616.24 USD NEW HEAD SPACER PLATE. FITS MULTIPLE CAT APPLICATIONS. MOST COMMON 3406B .339 THICKNESS, Serial#: 225-3100 2253100 360474, Core Charge: 0, Casting#: 225-3100 2253100 360474 ConditionNewPart Number225-3100 2253100 360474Stock Number360474 MLS Number10536145CategoryEngine 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 1995 Caterpillar 3406C Upright A/C Compressor Mount, Part # 4W0074 $100 USD good used upright compressor mount/ air conditioning compressor mount., Serial#: NA, Core Charge: NA ConditionUsedFits To Make(s)KenworthFits To Model(s)W900Will Fit Year(s)1995Part Number4w0074Stock Number70624-33 MLS Number13190941CategoryEngine Miscellaneous Parts Last Updated3/25/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Caterpillar 3406C A/C Mounting Bracket, Part # 101-3861 for 1995 Kenworth W900 $250 USD GOOD USED CATERPILLAR A/C MOUNTING BRACKET, Serial#: NA, Core Charge: NA ConditionUsedFits To Make(s)KenworthFits To Model(s)W900Will Fit Year(s)1995Part Number101-3861Stock Number70624-28 MLS Number13112218CategoryEngine Miscellaneous Parts Last Updated3/25/2026 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 3 Photos View 0 Videos Used Adapter for Caterpillar 3406B/C Engines, Part # 8N-8100 Contact for price USED ADAPTER FOR CAT 3406B/C ENGINES, PART # 8N-8100, Serial#: NA ConditionUsedPart Number8N-8100Stock NumberP-60652 MLS Number12771678CategoryEngine 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 New Caterpillar 3406 Timing Cover Gasket, Part # 331399 / 1669146, Fits 3400 Series $23.15 USD NEW TIMING COVER GASKET PART # 331399 FITS CAT 3400 SERIES ENGINES, Serial#: NA ConditionNewPart Number331399 / 1669146Stock Number331399 MLS Number12655745CategoryEngine 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 Fuel Injection Line Retainer 20.75MM Inner Diameter, Part # 7W-2315 $20 USD 20.75MM INNER DIAMETER FUEL INJECTION LINE RETAINER PART NUMBER 7W-2315, Serial#: 7FB39680 ConditionUsedPart Number7W-2315Stock NumberP-60572 MLS Number12402974CategoryEngine 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 3406 Oil Pan Gasket, Fits Early C15, Part # 4N1151-6 331150 $30.45 USD NEW OIL PAN GASKET. PAPER STYLE. FITS 3406 AND EARLY C15 MODELS. SINGLE PIECE. FITS BLOCK STIFFENER PLATE ALSO., Serial#: 4N1151-6, Core Charge: 0, Casting#: 4N1151-6 ConditionNewPart Number4N1151-6 331150Stock Number4N1151-6 MLS Number9915501CategoryEngine 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/C IPD Head Gasket Set, Part # 406063 $402.41 USD IPD HEAD GASKET SET, CONFIRM FITMENT WITH YOUR ENGINE SERIAL #., Serial#: 3406B/C, Core Charge: 0, Casting#: 406063 ConditionNewPart Number406063Stock Number406063 MLS Number12288593CategoryEngine 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 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