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PAC Racing 400 Series Valve Spring Retainers PAC-R408
Part Number: RSC-PAC-R408
PAC Racing 400 Series Valve Spring Retainers
Dual Spring 400 Series Retainer - +0.050 Sportman Retainer for all 1.050 ID Dual Drag Springs. Lock angle: ST
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Estimated Ship Date: Nov 9, 2026 Would you rather pick it up?
PAC Racing 400 Series Valve Spring Retainers PAC-R408-16
Not Yet Reviewed
Estimated Ship Date: Dec 31, 2026
Overview
Brand:
Manufacturer's Part Number:
PAC-R408
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-R408
Item Number:
3071174
Outside Diameter of Outer Spring (in.):
1.450 in.
Retainer Material:
Titanium
Lock Style:
10 degree
Valve Spring Style:
Standard
Retainer Style:
Tall
Number of Springs Per Valve:
Dual
Inside Diameter of Inner Spring (in.):
0.715 in.
Locks Included:
No
Quantity:
Sold individually.
Notes:
+0.050 in. installed height.
PAC Racing 400 Series Valve Spring Retainers
PAC Racing 400 Series valve spring retainers are made from the very best American Titanium 6AL4V material available to bring you great strength with less weight. In order to have uniform material, PAC Racing buys mil run lots so they can define the tensile strength and seam characteristics. This version of titanium is widely used in the Aerospace industry, allowing for lower material costs compared to their 500 Series. These 400 Series retainers are robust, lightweight powerhouses able to tackle most street and off-road builds. The last thing anyone wants is a cheap part to ruin your day. For strength, uniformity, and reliability, you need to use PAC Racing 400 Series valve spring retainers.
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