Katech LT4 Intake Extreme Duty H13 Tool Steel Valve Spring Replacement Retainer

Katech LT4 Intake Extreme Duty H13 Tool Steel Valve Spring Replacement Retainer

Hardened H13 Tool Steel for Compatible LT4 Intake Valve Spring Packages.

The Katech LT4 Intake Extreme Duty H13 Tool Steel Valve Spring Replacement Retainer provides an individual service component for compatible LT4 intake valvetrain packages. Its hardened tool steel construction addresses spring-contact wear that can develop when steel valve springs contact titanium retainers over time.

Features & Benefits

• Replacement Component for Compatible LT4 Intake Valvetrain Packages
• Hardened H13 Tool Steel Construction
• Increased Long-Term Wear Resistance Compared with Titanium Retainers in Evaluated Katech Camshaft Packages
• Lighter Than the Referenced OEM Retainer
• Proudly Engineered and Manufactured by Katech Engineering in Clinton Township, Michigan, USA

Technical Specifications

• Product Type: Replacement Intake Valve Spring Retainer
• Engine Application: LT4
• Valve Position: Intake
• Material: Hardened H13 Tool Steel
• Spring Compatibility: Compatible PSI Valve Spring Packages; Confirm Specific Spring Model Before Ordering

What's Included

• One Replacement Intake Valve Spring Retainer — Sold Individually

Valve springs and valve locks are not included.

Installation Quantity: Eight retainers are required for a complete compatible LT4 intake valve installation.

Retainer Weight Comparison

• Referenced OEM Retainer: 11.4 Grams
• Referenced Katech Titanium Retainer: 5.0 Grams
• Katech H13 Tool Steel Retainer: 9.1 Grams

Development & Validation

Katech developed this design on its Spintron valvetrain dynamics test cell. Stability was validated up to 8,100 RPM in tested combinations, and durability was evaluated using Katech's 24 Hours of Daytona course simulation.

These results apply to the evaluated valvetrain packages. The operating range of a completed engine depends on its camshaft, valves, springs, lifters, pushrods, and rocker configuration.

Fitment & Installation Notes

Confirm that the replacement matches the existing LT4 intake valvetrain package before ordering.

• Confirm the Specific PSI Valve Spring Model
• Verify Valve Stem and Valve Lock Compatibility
• Inspect Springs and Locks for Wear or Damage
• Check Spring Installed Height and Spring Pressures
• Verify Coil Bind Clearance at Maximum Valve Lift
• Check Retainer-to-Seal and Retainer-to-Guide Clearance
• Follow Appropriate Valvetrain Inspection and Service Intervals

Why Choose Katech

Katech's in-house manufacturing and valvetrain development support component selection for demanding engine builds. This replacement retainer allows a compatible LT4 intake package to be serviced one component at a time.

For LT4 intake retainer and PSI valve spring compatibility questions, contact .