My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Manley 42378-16 Valve Spring Retainers - 16 Pack

Manufacturer

Part Number

42378-16
Sale Price

$98.06

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 42378-16 valve spring retainers are precision-machined components designed to secure valve springs in high-performance engine applications. These retainers are manufactured from high-quality materials to withstand the extreme loads and temperatures found in racing and performance engines.

Key Features:

  • Precision-machined for exact fitment and consistent performance
  • Engineered to maintain proper valve spring tension and geometry
  • Manufactured to strict tolerances for reliability in high-RPM applications
  • Designed for use with Manley valve springs and keeper systems
  • Sold as a set of 16 retainers for 8-cylinder applications

Manley Performance Products has been manufacturing premium valvetrain components for racing and performance applications for decades. These valve spring retainers are essential components in any valvetrain rebuild or upgrade, ensuring proper valve operation and preventing valve spring failure under high-stress conditions.

Products specifications

Inside Diameter (in)

0.570 in.

Inside Diameter of Inner Spring (in)

0.765 in.

Locating Shoulder Type

Inside

Locator Material

Steel

Locator Thickness (in)

0.062 in.

Outside Diameter (in)

1.535 in.

Outside Diameter of Outer Spring (in)

1.550 in.

Quantity

Sold as a set of 16.

Product was as described, great price and reasonable shipping cost. Shipping was also very quick.

Nice site

Grate

RAPID SHIPPING RESPONSE BEST PRICING EVER!!!!!!!!!!!!!!

Thanks for offering instant $5.00 back on Order Number: 12559 for writing this review. <br>Great prices and fast shipping. I do not have the part yet but it was the best price on a LT1 MSD opti spark anywhere on the net. Great deal!!! And it was still cheaper than Jegs or Summit even with overnight shipping. Will use again if the deals are this good!

Great price, very helpful tech support,thanks will buy again<br><br> Chris

Very good company! Shipped out product very fast!!! I can say i will use them again

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy