PAC Racing 400 Series Valve Spring Retainers

5.0 out of 5 stars 3 Customer Reviews

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

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, an

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PAC Racing 400 Series Valve Spring Retainers PAC-R464-16

Valve Spring Retainers, 400 Series, Single, Titanium, 0.795 in. O.D., Set of 16

Part Number: RSC-PAC-R464-16

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PAC Racing 400 Series Valve Spring Retainers PAC-R432-16

Valve Spring Retainers, 400 Series, Dual, Titanium, 1.284 in. O.D., 8 degree, Set of 16

Part Number: RSC-PAC-R432-16

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PAC Racing 400 Series Valve Spring Retainers PAC-R435

Valve Spring Retainer, 400 Series, Dual, Titanium, 1.300 in. O.D., 7 degree, Each

Part Number: RSC-PAC-R435

5.0 out of 5 stars ( 1 )

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PAC Racing 400 Series Valve Spring Retainers PAC-R450-16

Dual Spring 400 Series Retainer - Retainer for RPM Series Dual Valve Springs (mini 8 Locks). Lock angle: min

Part Number: RSC-PAC-R450-16

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PAC Racing 400 Series Valve Spring Retainers PAC-R401-16

Valve Spring Retainers, 400 Series, Titanium, 1.480 in. O.D., Tall, Triple, 10 degree, Set of 16

Part Number: RSC-PAC-R401-16

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PAC Racing 400 Series Valve Spring Retainers PAC-R432

Valve Spring Retainer, 400 Series, Dual, Titanium, 1.284 in. O.D., 8 degree, Each

Part Number: RSC-PAC-R432

5.0 out of 5 stars ( 1 )

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PAC Racing 400 Series Valve Spring Retainers PAC-R450

Dual Spring 400 Series Retainer - Retainer for RPM Series Dual Valve Springs (mini 8 Locks). Lock angle: min

Part Number: RSC-PAC-R450

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PAC Racing 400 Series Valve Spring Retainers PAC-R404

Valve Spring Retainers, 400 Series, Tall, Titanium, 1.480 in. Outer Spring O.D., 10 degree Lock Style, Dual Springs, +0.050 in. Installed Height, Each

Part Number: RSC-PAC-R404

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

PAC Racing 400 Series Valve Spring Retainers PAC-R455

Dual Spring 400 Series Retainer - Titanium Retainer for PAC-1222X Valve Spring. Lock angle: LS 7 degree

Part Number: RSC-PAC-R455

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PAC Racing 400 Series Valve Spring Retainers PAC-R401

Valve Spring Retainer, 400 Series, Titanium, 1.480 in. O.D., Tall, Triple, 10 degree, Each

Part Number: RSC-PAC-R401

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

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PAC Racing 400 Series Valve Spring Retainers PAC-R401-16

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PAC Racing 400 Series Valve Spring Retainers PAC-R439

Dual Spring 400 Series Retainers - Titanium Ford (FMOD) for PAC-1512 Valve Springs. Lock angle: 7 degree

Part Number: RSC-PAC-R439

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PAC Racing 400 Series Valve Spring Retainers PAC-R416-16

Valve Spring Retainers, 400 Series, Dual, Titanium, 1.300 in. O.D., 7 degree, Set of 16

Part Number: RSC-PAC-R416-16

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

PAC Racing 400 Series Valve Spring Retainers PAC-R402

Triple Spring 400 Series Retainer - +0.050 Sportman Triple Spring Drag Race Retainer. Lock angle: STD 8 degre

Part Number: RSC-PAC-R402

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

PAC Racing 400 Series Valve Spring Retainers PAC-R402-16

Triple Spring 400 Series Retainer - +0.050 Sportman Triple Spring Drag Race Retainer. Lock angle: STD 8 degre

Part Number: RSC-PAC-R402-16

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

PAC Racing 400 Series Valve Spring Retainers PAC-R408

Dual Spring 400 Series Retainer - +0.050 Sportman Retainer for all 1.050 ID Dual Drag Springs. Lock angle: ST

Part Number: RSC-PAC-R408

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

PAC Racing 400 Series Valve Spring Retainers PAC-R416

Valve Spring Retainer, 400 Series, Dual, Titanium, 1.300 in. O.D., 7 degree, Each

Part Number: RSC-PAC-R416

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

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