3mirrors Valve Lifter Push Rod Guide Trays 4-Pack for GM LS Engines OE 12595365, Correct Lifter Alignment

3mirrors valve lifter push rod guide trays (4-pack) replace OEM 12595365 to secure hydraulic roller lifters in GM LS family engines.

These replacement guide trays are built to the OE 12595365 specification to provide the correct fit and function for Gen IV V8 lifter buckets and many Gen III/Gen V blocks. Sold as a set of four with the necessary tray bolts, they let you convert an Active Fuel Management (AFM) or Displacement On Demand (DOD) setup to conventional hydraulic roller lifters when you swap lifter types. The pieces are designed to match GM's dimensions and installation points so you get predictable alignment and durable performance when servicing LS2, LS3, LS7, LS9, LSA and related engines.

Will these guide trays fit my LS engine and which blocks are supported?

They are made to the OE 12595365 design and intended primarily for Gen IV V8 lifter bucket applications. They are also compatible with many Gen III blocks and modern Gen V blocks when using standard LSx hydraulic lifters.

• Direct fit for Gen IV lifter buckets: LS2, LS3, LS7, LS9, LSA.
• Works on Gen III blocks (LS1, LS6) with proper lifter conversion.
• Compatible with Gen V blocks (LT1, L86, L83, LT4) using conventional lifters.
• Not compatible with AFM/DOD lifters without converting to standard lifters first.

How do these trays help when converting from AFM/DOD to conventional lifters?

When converting an AFM/DOD cylinder deactivation system back to standard hydraulic lifters you must replace the special AFM trays with conventional guide trays. These 3mirrors trays replicate the OE geometry so the replacement lifters sit correctly and move freely.

• Provides correct lifter alignment for standard hydraulic roller lifters.
• Maintains OEM mounting locations and bolt patterns for easy installation.
• Simplifies AFM/DOD conversion when switching lifter types.
• Sold as a set of four trays with matching tray bolts for a straightforward swap.

What materials and quality can I expect from these replacement trays?

Manufactured to mirror GM OE specifications, the trays are produced for reliable fit, form, and function rather than cosmetic appearance. They focus on dimensionally accurate tolerances and durable construction so the lifters retain proper orientation under engine load.

• OE-style design based on part number 12595365 for consistent fit.
• Built to withstand typical engine operating conditions and lifter motion.
• Packaged as a 4-piece kit to address multiple cylinders at once.
• Intended for use with conventional hydraulic roller lifters only.

What should I prepare for installation and what are the limits?

Installation requires removing the original AFM/DOD trays if present and fitting these trays plus bolts where indicated by the factory service manual. Ensure you are switching to compatible conventional lifters; these trays will not accept AFM/DOD lifters themselves.

• Requires standard shop tools and adherence to GM torque specs for tray bolts.
• Confirm lifter type before installation — not for AFM/DOD lifters.
• Recommended to replace lifters and inspect bores while the engine is disassembled.
• Sold as a set of four trays to cover multiple lifter positions during a conversion or rebuild.

Who is this for: This 4-pack of 3mirrors valve lifter push rod guide trays is intended for mechanics, restoration enthusiasts, and DIY engine builders converting AFM/DOD LS-family engines to conventional hydraulic roller lifters or replacing worn OE trays. Choose this kit if you need an OE-dimension replacement for Gen IV lifter buckets that also fits many Gen III and Gen V blocks when used with standard LSx lifters. It is ideal during cam swaps, lifter replacements, or AFM/DOD system deactivations where correct lifter guidance and repeatable alignment matter.