1991 Western Star 4900 Engine
Select Your Submodel
- Engine Blocks
- Valves & Valvetrain Parts
- Pistons, Rings & Connecting Rods
- Oil Filters
- Serpentine Belts & Auxiliary Drive Belts
- Valve Covers
- Timing Gears, Chains & Covers
- Oil Pans, Drain Plugs & Dipsticks
- Cylinder Heads
- Engine Sensors, Relays, Switches
- Oil Pumps
- Oil Coolers
- Camshafts
- Crankshafts
- Engine Bearings
- Engine Rebuild Kits
- Intercoolers
- Throttle Bodies
- Motor Oils
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PAI®Camshaft Thrust WashersWestern Star 4900 14.0L 1991, Camshaft Thrust Washers by PAI®. 5 Pieces. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...Thrust WasherNon-Flanged Camshaft$8.54 - PAI®Compressor SealWestern Star 4900 14.6L 1991, Compressor Seal by PAI®. Sold Individually. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...2 Years WarrantyPerfect blend of leading innovations and superior workmanship$7.30
- PAI®Connecting Rod BushingWestern Star 4900 11.1L / 12.7L 1991, Connecting Rod Bushing by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$25.13
- PAI®Cylinder Head BoltWestern Star 4900 11.1L / 12.7L 1991, Cylinder Head Bolt by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$9.33 - $166.34
- PAI®Cylinder Head Spacer ShimWestern Star 4900 14.6L 1991, Cylinder Head Spacer Shim by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$599.75
- PAI®Engine Spacer PlateWestern Star 4900 14.6L 1991, Engine Spacer Plate by PAI®. Sold Individually. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...Cylinder Block2 Years Warranty$568.78
- PAI®Liner ShimsWestern Star 4900 1991, Liner Shims by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...2 Years WarrantyPerfect blend of leading innovations and superior workmanship$18.24 - $85.85
- PAI®Oil Pressure Feed LineWestern Star 4900 11.1L / 12.7L 1991, Oil Pressure Feed Line by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$64.75 - $85.39
- PAI®Piston Cooling NozzlesWestern Star 4900 1991, Piston Cooling Nozzles by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$8.68 - $16.47
- PAI®Rocker Cover GasketsWestern Star 4900 14.0L 1991, Rocker Cover Gaskets by PAI®. 3 Pieces. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....2 Years WarrantyPerfect blend of leading innovations and superior workmanship$16.86
- PAI®Wave WashersWestern Star 4900 14.0L 1991, Wave Washers by PAI®. 6 Pieces. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Stainless Steel2 Years Warranty$2.83
- Phillips & Temro®Immersion Engine HeaterWestern Star 4900 14.6L 1991, Immersion Engine Heater by Phillips & Temro®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$87.36
- PAI®Aftercooler GasketsWestern Star 4900 14.6L 1991, Aftercooler Gaskets by PAI®. 4 Pieces. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....2 Years WarrantyPerfect blend of leading innovations and superior workmanship$1.72
- Dorman HD Solutions®Throttle Position SensorWestern Star 4900 With WM526 Series Pedals 1991, Throttle Position Sensor by Dorman HD Solutions®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety...Designed as a replacement for your worn-out fuel system partWill help optimize your vehicle’s performance and fuel efficiency$316.99
- PAI®Upper Engine Gasket SetWestern Star 4900 1991, Upper Engine Gasket Set by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$292.54 - $348.92
- PAI®Engine Oil CoolerWestern Star 4900 1991, Engine Oil Cooler by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$504.09 - $871.96
- PAI®Engine Oil Pump SealWestern Star 4900 11.1L / 12.7L 1991, Engine Oil Pump Seal by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$2.16 - $7.30
- PAI®Engine Oil Pump SealWestern Star 4900 11.1L / 12.7L 1991, Engine Oil Pump Seal by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$2.16 - $7.30
- PAI®Valve Cover Bolt IsolatorsWestern Star 4900 10.0L 1991, Valve Cover Bolt Isolators by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$6.08
- Genuine®Motor OilMotor Oil, by Genuine®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas running out...$9.52 - $18.85
- Motorcraft®SAE 5W-20 Full Synthetic High Mileage Motor Oil, 1 QuartSAE 5W-20 Full Synthetic High Mileage Motor Oil, 1 Quart by Motorcraft®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in...$5.29
- Hastings®Hydraulic FilterWestern Star 4900 14.0L / 14.6L 1991, Hydraulic Filter by Hastings®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$15.14
- Enginetech®Engine ValveWestern Star 4900 11.1L / 12.7L 1991, Engine Valve by Enginetech®. The Engine Builder's Source, can locate the right part for nearly any rebuild application. Offering a full line of internal engine parts for domestic, import and high...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$8.89 - $9.84
- QualCast®Valve Seat InsertWestern Star 4900 11.1L / 12.7L 1991, Valve Seat Insert by QualCast®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....Made from high-strength materials for uncompromising durabilityDesigned to provide an excellent combination of price and quality$13.77
- ACDelco®Specialty™ Fleetrunner Heavy Duty V-Ribbed Serpentine BeltSpecialty™ Fleetrunner Heavy Duty V-Ribbed Serpentine Belt by ACDelco®. Limited Lifetime as long as original purchaser owns vehicle. This top-grade product is expertly made in compliance with stringent industry standards to offer a...High quality at an affordable priceExpertly made from premium materials$66.79
- Spectra Premium®New Design Heavy Duty Engine Oil Pan without GasketsWestern Star 4900 14.0L 1991, New Design Heavy Duty Engine Oil Pan without Gaskets by Spectra Premium®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of...Made with precision and quality in mindDesigned to meet your specific needs$361.30
- PAI®Crankshaft Main BearingWestern Star 4900 10.0L 1991, Crankshaft Main Bearing by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$216.54
- PAI®Crankshaft Position SensorWestern Star 4900 11.1L / 12.7L 1991, Crankshaft Position Sensor by PAI®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$29.95
- ID Select®Engine Oil CoolerWestern Star 4900 11.1L 1991, Engine Oil Cooler by ID Select®. Swap out your worn-out or malfunctioning part with this top-notch product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function as...Direct OEM replacement for your malfunctioning partMade to deliver the ultimate in quality, reliability, and value$157.50
- PAI®Heater Housing GasketsWestern Star 4900 10.0L 1991, Heater Housing Gaskets by PAI®. 5 Pieces. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Fiber2 Years Warranty$8.49
