Dorman 603-101 Front Non-Pressurized Coolant Reservoir 84-91 Chevy G30 GMC G3500
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$20.78
Select your vehicle at the top of the page to check fitment.
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.
- Direct replacement - this engine coolant reservoir matches the fit and function of the original part
- Ideal solution - engineered for a seamless installation
- Durable construction - manufactured from quality materials to withstand underhood heat and vibration
- Trustworthy design - backed by 100 years of automotive aftermarket experience
Vehicle Fitment
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1985-1991 | Chevrolet | G10 | Front | 4.3L V6 |
| 1984-1991 | Chevrolet | G10 | Front | 5.0L V8 |
| 1984-1991 | Chevrolet | G10 | Front | 5.7L V8 |
| 1984 | Chevrolet | G10 | Front | 4.1L L6 |
| 1985-1991 | Chevrolet | G20 | Front | 4.3L V6 |
| 1984-1991 | Chevrolet | G20 | Front | 5.0L V8 |
| 1984-1991 | Chevrolet | G20 | Front | 5.7L V8 |
| 1984-1991 | Chevrolet | G20 | Front | 6.2L V8 |
| 1984 | Chevrolet | G20 | Front | 4.1L L6 |
| 1985-1991 | Chevrolet | G30 | Front | 4.3L V6 |
| 1985 | Chevrolet | G30 | Front | 5.0L V8 |
| 1984-1991 | Chevrolet | G30 | Front | 6.2L V8 |
| 1984-1991 | Chevrolet | G30 | Front | 5.7L V8 |
| 1984 | Chevrolet | G30 | Front | 4.1L L6 |
| 1985-1991 | GMC | G1500 | Front | 4.3L V6 |
| 1984-1991 | GMC | G1500 | Front | 5.0L V8 |
| 1984-1991 | GMC | G1500 | Front | 5.7L V8 |
| 1984 | GMC | G1500 | Front | 4.1L L6 |
| 1985-1991 | GMC | G2500 | Front | 4.3L V6 |
| 1984-1991 | GMC | G2500 | Front | 5.0L V8 |
| 1984-1991 | GMC | G2500 | Front | 5.7L V8 |
| 1984-1991 | GMC | G2500 | Front | 6.2L V8 |
| 1984 | GMC | G2500 | Front | 4.1L L6 |
| 1985-1991 | GMC | G3500 | Front | 4.3L V6 |
| 1984-1991 | GMC | G3500 | Front | 6.2L V8 |
| 1984-1991 | GMC | G3500 | Front | 5.7L V8 |
| 1984 | GMC | G3500 | Front | 4.1L L6 |
Please confirm the part number and your vehicle's year, make, model and engine before ordering. Questions? Message us with your VIN and we'll check fitment for you.
Specifications
| Brand | Dorman |
|---|---|
| Part Number | 603-101 |
| UPC | 019495081364 |
| Placement | Front |
| Mounting Hardware Included | No |
| Height | 449 mm |
| Mounting Hole Quantity | 1 |
| Cap Type | Yes |
| Cap Included | Yes |
| Mounting Brackets Included | Yes |
| Pressurized | No |
| Color | White |
| Material | Plastic |
| Package Contents | 1 Coolant Reservoir; 1 Cap |
| Country of Origin | China |
| Warranty | Limited Lifetime |
OE & Interchange Numbers
| 14011345 | General Motors (OE) |
|---|---|
| 10409635 | General Motors (OE) |
| 15595742 | General Motors (OE) |
| FRT1223C | Interchange |
| 595742 | Interchange |
| RC27 | Interchange |
| 2411021 | Interchange |