# Proform 66331 | Valve Cover Bolt; For Use With Chevy LS Engines; Proform 66331 HOLD-DOWN BOLT ASSEMBLY KIT FOR LS

### PROFORM 66331 APPLICATION SPECS:

Valve Cover Bolt; For Use With Chevy LS Engines; Set Of 8

PROFORM® Parts (Specialty Auto Parts U.S.A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering and manufacturing creative products from intelligent concepts. For over 30 Year our goal is to provide the performance enthusiast with innovation and quality in all our products. With dozens of patents and thousands of SKUs each PROFORM part is designed to deliver maximum performance, value and style.

-   Compatibility: Chevy LS Engines
-   Includes Washers: Yes
-   Includes Hold-Down Tabs: No
-   Quantity: Set Of 8

Proform 66331 HOLD-DOWN BOLT ASSEMBLY KIT FOR LS

PRODUCT FEATURES:

Proform 66331 HOLD-DOWN BOLT ASSEMBLY KIT FOR LS

### FAQ

**What part number is this?** The listed part number is 66331.

**Is this product designed for direct replacement?** Confirm the original part specifications and intended application before ordering.

**Should I confirm compatibility before ordering?** Yes. Compare the original part and specifications before ordering.

### Common Searches

-   Proform 66331
-   66331 specifications
-   Proform Valve Cover Bolt; For Use With Chevy LS Engines; Proform 66331 HOLD-DOWN BOLT ASSEMBLY KIT FOR LS

## Details

- **Price:** 94.63 CAD
- **Vendor:** Proform
- **Type:** Valve Cover Bolt
- **Tags:** 66331, Proform, Valve Cover Bolt

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 94.63 CAD | In stock |

## Images

- Proform 66331 | Valve Cover Bolt; For Use With Chevy LS Engines; Proform 66331 HOLD-DOWN BOLT ASSEMBLY KIT FOR LS

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/66331-vp-proform-518)
> Updated: 2026-10-20