Product Description:
This genuine GM / ACDelco windshield-washer reservoir cap is intended for compatible 1988-2002 Chevrolet Camaro and Pontiac Firebird washer-fluid reservoirs.
It replaces a missing, cracked, loose or heat-damaged cap while restoring a proper factory-style closure at the washer-fluid fill opening.
| Feature | Product specification |
| Producer | General Motors / ACDelco |
| Product type | Windshield-washer reservoir cap |
| Vehicle platform | Third- and fourth-generation GM F-Body |
| Listed model years | 1988-2002 |
| Installation area | Washer-fluid reservoir fill opening |
| GM / ACDelco number | 19540420 |
| Condition | New genuine GM service part |
| Quantity | One cap |
| Years | Model | Required configuration |
| 1988-2002 | Chevrolet Camaro | Compatible washer reservoir |
| 1988-2002 | Pontiac Firebird / Formula / Trans Am | Compatible washer reservoir |
Confirm the vehicle configuration and compare the product photographs with the original component before ordering. Production changes, service replacements and prior modifications can affect fitment.
- One genuine GM / ACDelco washer-fluid reservoir cap
This cap closes the windshield-washer reservoir; it is not a radiator, coolant-recovery or brake-fluid cap.
Genuine GM Service Part
GM identifies 19540420 as a windshield-solvent container cap. GM Genuine Parts are OE parts installed during production or validated by General Motors for compatible GM vehicles.
Simple Restoration Detail
A missing cap leaves the fill opening exposed to dirt and debris. A cracked or loose cap can also reduce the finished appearance of the engine compartment.
Fitment Verification
GM used multiple reservoir designs across model years and equipment combinations. Compare the existing cap, reservoir opening and product photographs before ordering.
- Allow the engine compartment to cool.
- Clean loose dirt from around the washer-reservoir fill neck.
- Remove the damaged cap without allowing debris to enter the reservoir.
- Compare the new cap with the original and confirm the attachment style.
- Install the cap fully and verify that it seats securely.
Is this an original GM part?
Yes. Part number 19540420 is sold as a GM Genuine Parts / ACDelco windshield-solvent container cap.
How many caps are included?
One.
Will it fit every 1988-2002 F-Body reservoir?
Confirm the reservoir opening and original cap style because service replacements and reservoir changes can affect fitment.
Does it include the washer reservoir?
No. This listing includes the cap only.
Is it the coolant reservoir cap?
No. It is specifically for the windshield-washer fluid reservoir.
