Silver Seal Products Valve Spring Inserts

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The Original VSI

Individually Engineered, Tested, and Proven Superior!

For decades, engine builders have been installing VSI inserts/adjusters on all valve jobs. Why? Because they are superior to plain shims. Only VSI has patented heat-retarding serrations. Whether you're a PER or CER (Custom Engine Rebuilder), VSI completes the valve job, building your reputation while doing a complete job for your customer.

Remember, Only VSI Offers The Full Line, Don't Be Fooled By Limitations!

We also offer a High-Performance Series VSI that are the preferred valve spring insert when assembling High-Performance cylinder heads. Aluminum heads require the installation of inserts to prevent the valve spring from damaging the aluminum spring seat. Standard shims are unable to handle the stress of racing spring pressures.

Patented Heat-Slashing Serrations
Equalizes the Installed Height & Pressure Among Springs
Type A (.060) and B (.030) HP Series are Case Hardened
Type C (.015) HP Series are Blue Tempered Spring Steel.

0.750 - 0.990 O.D.

1.000 - 1.250 O.D.

1.260 - 1.500 O.D.

1.510 - 2.000 O.D.

Purchase One Of Our Kits, Most With A FREE CABINET DISPENSER!

	30 Boxes of Valve Spring Inserts + FREE CABINET DISPENSER! - 20000 30 Boxes of Type A (.060 Thick) and Type B (.030 Thick) VSI with FREE CABINET DISPENSER! 80% coverage on Pass. Cars, Trucks, Tractors, and Industrial Engines. $504.00 View Details / Add To Cart
	15 Boxes of Type A Valve Spring Inserts - 30000 15 Boxes of Type A (.060 Thick) VSI for Passenger Cars & Light Trucks $253.00 View Details / Add To Cart

Toll Free USA & Canada Phone: 800-521-2936 Fax: 800-521-0580

International: 734-479-2255