1990 Thomas School Bus Engine
Select Your Submodel
- Engine Blocks
- Valves & Valvetrain Parts
- Pistons, Rings & Connecting Rods
- Oil Filters
- Serpentine Belts & Auxiliary Drive Belts
- Timing Gears, Chains & Covers
- Oil Pans, Drain Plugs & Dipsticks
- Cylinder Heads
- Engine Sensors, Relays, Switches
- Oil Pumps
- Oil Coolers
- Crankshafts
- Engine Bearings
- Engine Rebuild Kits
- Throttle Bodies
- Motor Oils
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PAI®Engine Gasket KitThomas School Bus 1990, Engine Gasket Kit 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$5.97 - $222.44 - PAI®Piston RingThomas School Bus 5.9L 1990, Piston Ring 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$7.35
- PAI®Crankshaft Seal KitThomas School Bus 1990, Crankshaft Seal Kit 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$25.40 - $65.92
- PAI®Crankshaft Seal KitThomas School Bus 1990, Crankshaft Seal Kit 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$25.40 - $65.92
- PAI®Engine Oil PanThomas School Bus 8.3L 1990, Engine Oil Pan 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$55.46
- PAI®Engine Oil Pan GasketThomas School Bus 8.3L 1990, Engine Oil Pan Gasket 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$50.78
- PAI®Engine Oil PumpThomas School Bus 5.9L 1990, Engine Oil Pump 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$114.42
- PAI®Compressor Mounting GasketThomas School Bus 8.3L 1990, Compressor Mounting Gasket 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$12.68
- Dura-Bond®Camshaft Bearing SetThomas School Bus 5.9L 1990, Camshaft Bearing Set by Dura-Bond®. 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 with precision and quality in mindDesigned to meet your specific needs$5.75 - $10.00
- PAI®Oil Filter Adapter Gasket SetThomas School Bus 8.3L 1990, Oil Filter Adapter Gasket Set Set by PAI®. Designed utilizing the latest technology, this product by PAI features premium quality and will perform better than advertised. Perfect for your vehicle and...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$3.56
- PAI®Hydraulic Pump Cover GasketsThomas School Bus 5.9L / 8.3L 1990, Hydraulic Pump Cover 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...2 Years WarrantyPerfect blend of leading innovations and superior workmanship$2.96
- PAI®Push Rod SetThomas School Bus 8.3L 1990, Push Rod 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 from...Intake and Exhaust Valve Pushrod2 Years Warranty$4.98
- PAI®Engine Block Side Cover GasketThomas School Bus 5.9L 1990, Engine Block Side Cover Gasket 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...2 Years WarrantyPerfect blend of leading innovations and superior workmanship$17.66
- PAI®Rocker Cover GasketsThomas School Bus 5.9L 1990, Rocker Cover Gaskets 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....Silicone2 VH$4.05
- AKMI®Cylinder Head BoltsThomas School Bus 5.9L 1990, Cylinder Head Bolts by AKMI®. Designed utilizing the latest technology, this product by AKMI features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.56
- 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...$5.47
- 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
- Dayco®Drive Rite™ V-Ribbed Serpentine BeltThomas School Bus 8.3L 1990, Drive Rite™ V-Ribbed Serpentine Belt by Dayco®. Specially constructed for vehicles that utilize the multiple-belt system, this product features raw-edge construction along with a patented top cogged...More flexibility and increased airflow around the belt for prolonged service lifeRaw-edge sidewall construction along with a patented top cogged design for top performance$22.97
- PAI®Repair SleeveThomas School Bus 5.9L 1990, Repair Sleeve 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 craftsmanship....2 Years WarrantyPerfect blend of leading innovations and superior workmanship$23.88
- PAI®Timing Cover GasketThomas School Bus 1990, Timing Cover Gasket 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$21.18
- ID Select®Engine Oil CoolerThomas School Bus 8.3L 1990, 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 your...Direct OEM replacement for your malfunctioning partMade to deliver the ultimate in quality, reliability, and value$140.00 - $157.50
- Dorman HD Solutions®Throttle Position SensorThomas School Bus With WM526 Series Pedals 1990, 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
- Maxima Racing Oils®Performance Break-In™ SAE 5W-16 Break-In 2X Zinc Motor Oil, 5 GallonsPerformance Break-In™ SAE 5W-16 Break-In 2X Zinc Motor Oil, 5 Gallons x 1 Pail by Maxima Racing Oils®. Mineral based engine oil specifically formulated for breaking in engines with flat tappet camshafts, roller elements and where...$176.27
- Holstein®Oil Temperature SensorThomas School Bus 5.9L / 8.3L 1990, Oil Temperature Sensor by Holstein®. Global coverage of European, Asian, and Domestic vehicles. OE Replacement Parts You Can Trust. The Variable Valve Timing Solenoid alters the supply of oil pressure...Holstein focuses on using only the highest quality materials, manufactured to exacting standards for an aftermarket product that is truly built to match or exceed the OE partHolstein Variable Valve Position Sensor line has superior coverage for domestic and import applications$105.00
- Driven Racing Oil®Synthetic High Performance Supercharger Oil, 8 ozSynthetic High Performance Supercharger Oil, 8 oz by Driven Racing Oil®. 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...Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques$28.12
- Kendall®Motor OilMotor Oil, 1 Quart by Kendall®. Kendall GT-1 Competition Motor Oil, Nitro 70, is a high-quality automotive engine oil specially formulated for use in nitromethane- and alcohol-fueled drag racing vehicles. It is not recommended for use...$5.47 - $6.32
- Red Line®5WT SAE 0W-5 Full Synthetic Racing Motor Oil, 1 Gallon5WT SAE 0W-5 Full Synthetic Racing Motor Oil, 1 Gallon by Red Line®. Racing oils provide more wear protection than motor oils for passenger vehicles, however, these products contain fewer detergents and are not suitable for street use.Racing oils provide more wear protection than motor oils for passenger vehicles, however, these products contain fewer detergents and are not suitable for street useReformulated for improved frictional properties$79.85
- Red Line®60WT SAE 20W-60 Full Synthetic Racing Motor Oil, 1 Quart60WT SAE 20W-60 Full Synthetic Racing Motor Oil, 1 Quart by Red Line®. Racing oils provide more wear protection than motor oils for passenger vehicles, however, these products contain fewer detergents and are not suitable for street use.Racing oils provide more wear protection than motor oils for passenger vehicles, however, these products contain fewer detergents and are not suitable for street useReformulated for improved frictional properties$20.95
- Red Line®70WT Full Synthetic Racing Motor Oil, 1 Gallon70WT Full Synthetic Racing Motor Oil, 1 Gallon by Red Line®. Racing oils provide more wear protection than motor oils for passenger vehicles, however, these products contain fewer detergents and are not suitable for street use.Racing oils provide more wear protection than motor oils for passenger vehicles, however, these products contain fewer detergents and are not suitable for street useReformulated for improved frictional properties$79.85
