What material are these retainers made from?

These Ferrea valve spring retainers are CNC machined from solid titanium. Titanium is used for its combination of light weight and high strength, which is beneficial for valve train performance.

What does the 6-degree keeper angle mean?

The 6-degree keeper angle refers to the angle at which the valve keeper (or collet) engages with the retainer. This specific angle is part of the design to ensure proper seating and accurate control of the valve spring's action within the engine's valve train.

Are these retainers compatible with all valve springs?

These retainers are designed for use with specific valve springs and are part of a system for the Toyota 4AG engine. It's important to ensure they are paired with compatible valve springs to achieve the intended performance and reliability.

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Specifications

Brand: Ferrea
Part #: E11046

Ferrea Toyota 4AG Single Spring 6 Deg Pro CNC Titanium Retainer - Set of 20

Name: Ferrea Toyota 4AG Single Spring 6 Deg Pro CNC Titanium Retainer - Set of 20
Brand: Ferrea
SKU: ferrea-ferrea-toyota-4ag-single-spring-6-deg-pro-cnc-titanium-retainer-set-of-20-t14-416240
Price: 490.24 USD
Availability: BackOrder

$490.24

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Ferrea 4AG single spring retainer set. CNC machined titanium for Toyota 4AG engines.

Key Features

Set of 20 Ferrea valve spring retainers for Toyota 4AG engines.
Constructed from lightweight and strong titanium.
Features a 6-degree keeper angle for precise valve train operation.
CNC machined for accuracy and a consistent fit.
Designed for engine rebuilds where improved valve control is desired.

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About this part

Product Details

CNC machined from solid titanium, these Ferrea valve spring retainers are a strong choice for your Toyota 4AG engine build. They feature a 6-degree keeper angle, which is a specific design choice that matters for how the valve train operates. This angle helps ensure the retainer seats properly and works with the valve spring to control valve motion accurately.

When you're rebuilding the top end of a 4AG, using well-built components like these retainers makes a difference. Titanium is chosen here for its light weight and strength, which helps reduce the overall mass the valve spring has to control. This can lead to improved valve control at higher RPMs. The set includes 20 retainers, enough for a full engine rebuild.