Search  for anything...

Proform 66781 Valve Lash Wrench Set

  • Based on 0 reviews
Condition: New
Checking for the best price...
$39.96 Why this price?
Save $38.94 was $78.90

Buy Now, Pay Later


As low as $9 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Mar 18
Order within 6 hours and 5 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • Package Dimensions: 2.54 H x 26.416 L x 12.446 W (centimetres)
  • Package Weight: 0.7 pounds
  • Fit type: Vehicle Specific
  • Country of Origin : Taiwan

Description

Valve Lash Wrench, 5/8 in Wrench, 3/16 in and 7/32 in Allen, Insulated Handles, Steel, Kit

Color: Black


Brand: ProForm


Material: Alloy Steel


Item Weight: 12.16 ounces


Item Package Quantity: 1


Color: ‎Black


Brand: ‎ProForm


Material: ‎Alloy Steel


Item Weight: ‎12.16 ounces


Item Package Quantity: ‎1


Head Style: ‎Hex


Finish Type: ‎Painted, Polished


Operation Mode: ‎Mechanical


Manufacturer: ‎Proform


UPC: ‎037995667819


Global Trade Identification Number: ‎19


Model: ‎Valve Lash Wrench Set


Item Weight: ‎12.2 ounces


Product Dimensions: ‎11.25 x 6 x 5.5 inches


Item model number: ‎66781


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Per Item Description


Manufacturer Part Number: ‎66781


OEM Part Number: ‎66781


Date First Available: November 21, 2004


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Mar 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Does the trick
Super handy tool the made it a breeze to adjust my rockers and set preload. Nice quality.
Reviewed in the United States on December 10, 2025 by dylan Ladwig

  • Good price
Works well
Reviewed in the United States on January 25, 2026 by Dustin Kalland

  • should of bought years ago
these tools definitely make lashing easier than using an old wrench and L key
Reviewed in the United States on January 15, 2025 by neverbored_s10_addict

  • worked
Adjusted my 454 BBC with Comp Cams rockers. made quick work of it. Great quality.
Reviewed in the United States on May 1, 2021 by Todd Smelser

  • Covering the bases
Additional so I have all things needed.
Reviewed in the United States on March 21, 2024 by Rickie Pacaccio

  • A must !
I have a solid lifter cam in my motor and have to constantly check my lash this kit makes it super easy and I highly recommend it for any engine builder!
Reviewed in the United States on November 7, 2023 by Weld_God

  • So much better than using a box wrench and allen wrench together
So much better than using a box wrench and allen wrench together. Make sure to pick up some Go-No-Go Feeler gauges. Would be greater if the box end was a little deeper to fully engage the nut, but now I'm just being picky. Great value for the price.
Reviewed in the United States on May 11, 2015 by ButterWife

  • Quick and Easy;
Works fantastic in setting flat tappet solid lift cam...
Reviewed in the United States on May 3, 2020 by Antonio Butay

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...