OE Quality
60-Day Returns

Gates 42085 Engine Water Pump
Reliable Water Pump Replacement for Chevrolet, GMC, Jeep, and More
The Gates Water Pump (Standard) part number 42085 is engineered to provide dependable cooling system performance for a range of classic and modern vehicles. Designed with durable materials and precise specifications, this engine water pump supports efficient engine temperature regulation in Chevrolet, GMC, Jeep, Oldsmobile, and Pontiac models.
- Cast iron housing for enhanced durability and heat resistance
- Stamped steel impeller with standard rotation for consistent coolant flow
- Includes water pump and gasket for proper sealing
- Accessory belt drive style compatible with specified vehicles
- Two outlet ports for optimized coolant circulation
About the Gates Water Pump (Standard) Product Line
The Gates Water Pump (Standard) line focuses on delivering reliable engine water pumps built with quality materials such as cast iron housings and stamped steel impellers. This product line is designed to meet OEM specifications for a variety of vehicles, ensuring proper fit and function without including additional components like pulleys or fan clutches. Part number 42085 exemplifies this approach by providing a straightforward, durable water pump solution for accessory belt-driven engines.
Detailed Product Description
This engine water pump features a cast iron housing that offers strength and resistance to corrosion, essential for long-term operation in demanding engine environments. The stamped steel impeller rotates in the standard direction to maintain consistent coolant flow, helping prevent engine overheating. With two outlet ports, this pump supports efficient coolant distribution. The package includes the water pump and a gasket to ensure a secure seal during installation. It is designed for accessory belt drive systems and is not timing belt driven. Note that this pump does not include a back housing, thermostat, fan clutch, or pulley.
Compatible Vehicles and Common Applications
- Chevrolet C10, C10 Suburban, C15, C20, C30, C35, C1500, C1500 Suburban, C2500, C3500
- Chevrolet Camaro, Caprice, El Camino, Impala, Malibu, Nova
- GMC G10, G20, G30, K5 Blazer, K10, K10 Suburban, K20, K1500, K1500 Suburban, K2500
- Jeep CJ5, CJ7, Scrambler, Grand LeMans, Jimmy
- Oldsmobile Cutlass, Cutlass Supreme, LeMans, Omega, Starfire, Phoenix, Firebird
- Pontiac Grand LeMans, Firebird, Sunbird
Common Issues Addressed by This Water Pump
- Engine overheating due to coolant circulation failure
- Coolant leaks from worn or damaged water pump housing
- Reduced engine performance caused by inefficient cooling
- Noise or vibration from failing impeller or pump bearings
- Preventative maintenance for aging cooling systems in classic vehicles
Installation Notes and Tips
Ensure the engine is cool before beginning installation. Remove the old water pump and clean the mounting surface thoroughly to prevent leaks. Use the included gasket to create a proper seal. This water pump is designed for accessory belt drive systems; verify belt routing and tension during installation. Since the pump does not include a pulley or fan clutch, reuse existing components or replace separately if needed.
Quality Assurance and Warranty
Gates manufactures this water pump to meet or exceed OEM standards for durability and performance. The cast iron housing and stamped steel impeller are selected for longevity under typical operating conditions. While specific warranty details are not provided here, Gates products generally come with a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.
| Brand | Gates |
| Part Number | 42085 |
| Position | Water Pump (Standard) |
| Housing Material | Cast iron |
| Impeller Material | Stamped steel |
| Impeller Rotation | Standard |
| Includes Back Housing | No |
| Outlet Quantity | 2 |
| Thermostat And Housing Included | No |
| Contents | Water pump, gasket |
| Drive Style | Accessory belt |
| Fan Clutch Included | No |
| Pulley Included | No |
| Timing Belt Driven | No |
This part fits 174 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1984 | Chevrolet | C10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | C15 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | C20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | C35 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | Camaro | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | G10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | G20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | G30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Chevrolet | K10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | GMC | C1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | GMC | C2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | GMC | G1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | GMC | G2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | GMC | G3500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | GMC | K1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1984 | Pontiac | Firebird | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | C10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | C15 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | C20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | Camaro | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | G10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | G20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | G30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | Chevrolet | K10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | GMC | C1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | GMC | C2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | GMC | G1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | GMC | G2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | GMC | G3500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | GMC | K1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1983 | Jeep | CJ5 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1983 | Jeep | CJ7 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1983 | Jeep | Scrambler | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1983 | Pontiac | Firebird | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | C10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | C15 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | C20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | C30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | Camaro | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | G10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | G20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | G30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | K10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Chevrolet | K5 Blazer | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | GMC | C1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | GMC | C2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | GMC | G1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | GMC | G2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | GMC | G3500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | GMC | Jimmy | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | GMC | K1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1982 | Jeep | CJ5 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1982 | Jeep | CJ7 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1982 | Jeep | Scrambler | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1982 | Pontiac | Firebird | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | C10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | C20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | C30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | G10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | G20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | G30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | K10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Chevrolet | K5 Blazer | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | GMC | C1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | GMC | C2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | GMC | G1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | GMC | G2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | GMC | Jimmy | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | GMC | K1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1981 | Jeep | CJ5 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1981 | Jeep | CJ7 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1981 | Jeep | Scrambler | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | C10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | C10 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | C20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | C30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | G10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | G20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | K10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | K10 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | K20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | K5 Blazer | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Chevrolet | Monza | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | C1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | C1500 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | C2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | C3500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | G1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | G2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | Jimmy | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | K1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | K1500 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | GMC | K2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1980 | Jeep | CJ5 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1980 | Jeep | CJ7 | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1980 | Oldsmobile | Starfire | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1980 | Pontiac | Sunbird | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | C10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | C10 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | C20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | C30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | Camaro | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | Caprice | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | G10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | G20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | G30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | Impala | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | K10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | K10 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | K20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | K5 Blazer | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | Monza | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1979 | Chevrolet | Nova | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | C1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | C1500 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | C2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | C3500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | G1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | G2500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | G3500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | Jimmy | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | K1500 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | GMC | K1500 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1979 | Oldsmobile | Starfire | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1979 | Pontiac | Sunbird | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | C10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | C10 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | C20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | C30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | Camaro | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | Caprice | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | G10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | G30 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | Impala | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | K10 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | K10 Suburban | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | K20 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | K5 Blazer | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | Monza | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1978 | Chevrolet | Nova | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | GMC | G15 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | GMC | G35 | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | GMC | Jimmy | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1978 | Oldsmobile | Starfire | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1978 | Pontiac | Phoenix | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1978 | Pontiac | Sunbird | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1977 | Chevrolet | Camaro | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1977 | Chevrolet | Caprice | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1977 | Chevrolet | El Camino | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1977 | Chevrolet | Impala | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1977 | Chevrolet | Malibu | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1977 | Chevrolet | Nova | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1977 | Pontiac | Phoenix | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1977 | Pontiac | Sunbird | 2.5L | L4 | GAS | N/A | Water Pump (Standard) |
| 1976 | Chevrolet | Camaro | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Chevrolet | El Camino | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Chevrolet | Malibu | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Chevrolet | Nova | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Oldsmobile | Cutlass | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Oldsmobile | Cutlass Supreme | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Oldsmobile | Omega | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Pontiac | Firebird | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Pontiac | Grand LeMans | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1976 | Pontiac | LeMans | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Chevrolet | Camaro | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Chevrolet | El Camino | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Chevrolet | Malibu | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Chevrolet | Nova | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Oldsmobile | Cutlass | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Oldsmobile | Cutlass Supreme | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Oldsmobile | Omega | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Pontiac | Firebird | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Pontiac | Grand LeMans | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
| 1975 | Pontiac | LeMans | 4.1L | L6 | GAS | N/A | Water Pump (Standard) |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.