Chevrolet Performance Hydraulic Roller Lifters 12499225

Chevrolet Performance Hydraulic Roller Lifters – LS7-Style LS Lifter Set (16) – 12499225

Chevrolet Performance 12499225 hydraulic roller lifters are the go-to OEM LS7/LS2-style lifter set for Gen III/IV LS builds. Designed by GM’s Racing and Powertrain division, these .842" hydraulic rollers drop into LS engines as a reliable upgrade or replacement, with improved valving for high-rpm durability while still living happily in daily street use.

• Brand: Chevrolet Performance

• Part Number: 12499225

• Product Type: Hydraulic roller lifter kit (complete set)

• Engine Family: GM LS-Series Gen III/IV (LS, LS-based truck engines; commonly used as LS7/LS2 lifter upgrade)

• Lifter Type: OEM-style hydraulic roller

• Quantity: 16 lifters per set (enough for one V8)

• Lifter Outside Diameter: 0.842"

• Design Features: GM original equipment lifter with improved valving for increased rpm capability and durability

• Typical Uses:

  • Direct LS replacement lifters

  • Popular LS7/LS2 lifter upgrade for performance LS builds

  • Common choice for AFM/DOD delete on L99/L76 and some Gen 5 LT builds (with matching parts)

• Application Notes: Fits LS-Series engines without Active Fuel Management (AFM); not for factory AFM lifter bores unless converting with appropriate parts