# MotoRad T9 Engine Coolant Radiator Cap for 1971-1991 Chevy G-Series

### Specifications

Cap Depth: 1.18 in

Coolant Recovery System: Open & Closed System

Filler Neck Height: 0.75 in

Filler Neck Outside Diameter: 2.13 in

Lever Type: Standard

Material: Stainless Steel, Rubber

Pressure Rating: 9 psi

Quick Pressure Release: No

SAE Pressure Range: 9-11 psi

Valve OD: 1.54 in

Width: 2.26 in

### Features

-   Offer precise pressure control
-   Ensure the proper fit
-   Easy installation

### Product Details

Engine Coolant Radiator Cap (T9) by MotoRad®. Pressure: 9 psi. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. 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 industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.

MotoRad radiator pressure caps are designed and manufactured to offer precise pressure control for the automotive cooling system. Most standard radiator caps are also offered in a version with a safety lever feature. MotoRad’s radiator caps are manufactured to meet all OEM requirements and each part is factory tested prior to shipping to customers. MotoRad standard radiator caps make an excellent replacement for worn or faulty radiator caps, which occur over time. Radiator caps are easy to install and remove because the cap's shell turns interdependent of the sealing gasket, stem, and bottom plate. A slowly failing, worn out or faulty radiator cap can result in overheating, loss of coolant or even major engine damage.

One function of the radiator cap is to keep pressure on the cooling system. If the pressure on the system drops because of a failing radiator cap, the boiling point of the coolant also drops. If the boiling point drops enough, it can cause the engine to overheat.

If you replace a thermostat and the radiator cap is more than three years old, chances are is not holding to the same pressure as a new cap. Explain to your customer that by replacing the thermostat and the radiator cap, their vehicle should run within the specified operating temperature and the coolant system will be properly pressurized.

The radiator pressure cap is a very important component of the system. The cap monitors the pressure of the system and adjusts to maintain the desired pressure (normally in the 15 psi range). If an improper cap or a defective cap is used, the correct system pressure will not be maintained. If the system pressure is too low the coolant will be allowed to boil at unacceptable temperatures. If the system pressure is too high, damage to the system can occur, potentially causing loss of coolant and an engine overheating condition.

Brand: MotoRad

Part Number: T9

UPC: 055644000091

OE Numbers: 19114607

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

1983

Chevy

G-Series

1984

Chevy

G-Series

1985

Chevy

G-Series

1986

Chevy

G-Series

1987

Chevy

G-Series

1988

Chevy

G-Series

1989

Chevy

G-Series

1990

Chevy

G-Series

1991

Chevy

G-Series

1983

GMC

G-Series

1984

GMC

G-Series

1985

GMC

G-Series

1986

GMC

G-Series

1987

GMC

G-Series

1988

GMC

G-Series

1989

GMC

G-Series

1990

GMC

G-Series

1991

GMC

G-Series

1971

MG

Midget

1972

MG

Midget

1973

MG

Midget

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the Vehicle Fitment Table above before purchase.

**What part number is this?**  
The listed part number is T9.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match the compatible vehicle applications listed in the fitment table.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering.

### Common Searches

-   Engine Coolant Radiator Cap for Chevy G-Series
-   T9 fitment
-   MotoRad Engine Coolant Radiator Cap
-   1983 Chevy G-Series Engine Coolant Radiator Cap

## Details

- **Price:** 6.69 CAD
- **Vendor:** MotoRad
- **Type:** Engine Coolant Radiator Cap
- **Tags:** 1971-1973 MG Midget, 1983-1991 Chevy G-Series, 1983-1991 GMC G-Series, Automotive, Engine Coolant Radiator Cap, MotoRad, T9

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 6.69 CAD | In stock |

## Images

- MotoRad T9 Engine Coolant Radiator Cap for 1971-1991 Chevy G-Series

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-t9-engine-coolant-radiator-cap)
> Updated: 2026-08-17