GM LS7 Hydraulic Roller Lifters (Non-DoD) GM Part #12499225
The Gold Standard for Non-DoD LS & LT Engine Builds
When deleting Active Fuel Management (AFM) or Displacement on Demand (DoD), one of the most important upgrades you can make is replacing the factory collapsible lifters with a premium conventional hydraulic roller lifter.
For years, the GM LS7 Hydraulic Roller Lifter has become the industry standard.
Originally developed for the legendary 7.0L LS7 engine found in the C6 Corvette Z06, these lifters quickly earned a reputation for exceptional durability, outstanding reliability, and excellent high-RPM performance. Today, they remain one of the most widely used hydraulic roller lifters for both LS and Gen V LT performance engines.
Whether you're performing a simple DoD delete or building a serious street, strip, or road race engine, genuine GM LS7 lifters continue to be one of the best values in high-performance valvetrain components.
Why Delete DoD Lifters?
Factory LT1 and LT4 engines equipped with Active Fuel Management (AFM/DoD) utilize specialized collapsible lifters that allow the ECM to deactivate cylinders during light-load operation for improved fuel economy.
While effective for emissions and fuel efficiency, these lifters introduce additional internal complexity through locking pins, collapsible mechanisms, and oil-controlled actuation systems.
When installing an aftermarket camshaft or performing a DoD delete, these factory lifters should always be replaced with conventional non-DoD hydraulic roller lifters.
Benefits include:
Elimination of the complex collapsing mechanism
Improved long-term reliability
Increased valvetrain stability
Better compatibility with aftermarket camshafts
Simplified oil control
Reduced risk of common AFM/DoD lifter failures
For virtually every performance LT build, deleting the factory DoD system is considered one of the best investments in engine durability.
Proven GM Engineering
Unlike many aftermarket lifters, the LS7 lifter benefits from General Motors' extensive OEM engineering and validation process.
Designed to survive hundreds of thousands of miles in one of GM's highest-performance production engines, these lifters have become trusted by professional engine builders around the world.
Their reputation wasn't built through marketing—it was earned through years of reliable service in everything from daily drivers to 1,000+ horsepower builds.
Built for Performance
The LS7 hydraulic roller lifter features:
Precision hydraulic roller design
Steel internal check ball
18 precision needle bearings
.062" diameter needle bearings
.140" wide roller
OEM GM manufacturing quality
Excellent compatibility with aftermarket valve springs and hydraulic roller camshafts
The result is excellent durability, consistent hydraulic control, and reliable operation across a wide range of engine combinations.
Why We Recommend Them
At Griffin Motorsports, we believe in recommending parts that consistently deliver outstanding results.
The genuine GM LS7 lifter has become the "go-to" hydraulic lifter for countless professional engine builders because it offers an incredible balance of reliability, performance, availability, and value.
Unlike many premium aftermarket lifters costing significantly more, the LS7 lifter has established a long track record of dependable performance in thousands of successful LS and LT engine builds.
Simply put...
They just work.
Should You Consider the CTS-V.R Lifter Instead?
If you're building an engine that will routinely see extremely high engine speeds, aggressive valve spring pressures, or you're simply looking for GM's ultimate hydraulic roller lifter, you may want to consider the legendary GM Performance CTS-V.R (88958689) lifter.
Originally developed for GM's professional racing program, the CTS-V.R lifter features reduced hydraulic plunger travel, a ceramic check ball, and additional refinements aimed at maximizing hydraulic stability during sustained high-RPM operation.
While many professional builders successfully use LS7 lifters in demanding performance applications, the CTS-V.R represents GM's premium hydraulic roller offering for customers seeking every possible advantage in extreme racing environments.
For approximately 90% of high-performance LT builds, however, the LS7 lifter remains an outstanding choice that delivers exceptional reliability at a more affordable price point.
Advantages
Genuine GM Performance Component
Industry-proven reliability
Perfect upgrade during AFM/DoD deletion
Compatible with aftermarket hydraulic roller camshafts
Excellent availability
Outstanding value
Trusted by professional engine builders
Proven in countless street and race applications
One of the most popular hydraulic lifters for LS & LT engines
Specifications
Manufacturer: General Motors
GM Part Number: 12499225
Type: Hydraulic Roller Lifter (Non-DoD)
Quantity: Set of 16
Internal Check Ball: Steel
Roller Bearing Design: 18 × .062" needle bearings with .140" roller
Compatibility: Gen III & Gen IV LS engines and Gen V LT engines utilizing non-DoD lifter trays and compatible valvetrain components.
Griffin Motorsports Recommendation
If you're looking for one of the most trusted, proven, and cost-effective hydraulic roller lifters available for your LS or LT engine, it's hard to beat the genuine GM LS7 lifter. Whether you're deleting DoD or building a serious performance engine, these lifters have earned their reputation by delivering dependable performance year after year. For most enthusiasts, they're the perfect combination of quality, reliability, and value.
GM LS7 Hydraulic Roller Lifters (Non-DoD) GM Part #12499225
The Gold Standard for Non-DoD LS & LT Engine Builds
When deleting Active Fuel Management (AFM) or Displacement on Demand (DoD), one of the most important upgrades you can make is replacing the factory collapsible lifters with a premium conventional hydraulic roller lifter.
For years, the GM LS7 Hydraulic Roller Lifter has become the industry standard.
Originally developed for the legendary 7.0L LS7 engine found in the C6 Corvette Z06, these lifters quickly earned a reputation for exceptional durability, outstanding reliability, and excellent high-RPM performance. Today, they remain one of the most widely used hydraulic roller lifters for both LS and Gen V LT performance engines.
Whether you're performing a simple DoD delete or building a serious street, strip, or road race engine, genuine GM LS7 lifters continue to be one of the best values in high-performance valvetrain components.
Why Delete DoD Lifters?
Factory LT1 and LT4 engines equipped with Active Fuel Management (AFM/DoD) utilize specialized collapsible lifters that allow the ECM to deactivate cylinders during light-load operation for improved fuel economy.
While effective for emissions and fuel efficiency, these lifters introduce additional internal complexity through locking pins, collapsible mechanisms, and oil-controlled actuation systems.
When installing an aftermarket camshaft or performing a DoD delete, these factory lifters should always be replaced with conventional non-DoD hydraulic roller lifters.
Benefits include:
Elimination of the complex collapsing mechanism
Improved long-term reliability
Increased valvetrain stability
Better compatibility with aftermarket camshafts
Simplified oil control
Reduced risk of common AFM/DoD lifter failures
For virtually every performance LT build, deleting the factory DoD system is considered one of the best investments in engine durability.
Proven GM Engineering
Unlike many aftermarket lifters, the LS7 lifter benefits from General Motors' extensive OEM engineering and validation process.
Designed to survive hundreds of thousands of miles in one of GM's highest-performance production engines, these lifters have become trusted by professional engine builders around the world.
Their reputation wasn't built through marketing—it was earned through years of reliable service in everything from daily drivers to 1,000+ horsepower builds.
Built for Performance
The LS7 hydraulic roller lifter features:
Precision hydraulic roller design
Steel internal check ball
18 precision needle bearings
.062" diameter needle bearings
.140" wide roller
OEM GM manufacturing quality
Excellent compatibility with aftermarket valve springs and hydraulic roller camshafts
The result is excellent durability, consistent hydraulic control, and reliable operation across a wide range of engine combinations.
Why We Recommend Them
At Griffin Motorsports, we believe in recommending parts that consistently deliver outstanding results.
The genuine GM LS7 lifter has become the "go-to" hydraulic lifter for countless professional engine builders because it offers an incredible balance of reliability, performance, availability, and value.
Unlike many premium aftermarket lifters costing significantly more, the LS7 lifter has established a long track record of dependable performance in thousands of successful LS and LT engine builds.
Simply put...
They just work.
Should You Consider the CTS-V.R Lifter Instead?
If you're building an engine that will routinely see extremely high engine speeds, aggressive valve spring pressures, or you're simply looking for GM's ultimate hydraulic roller lifter, you may want to consider the legendary GM Performance CTS-V.R (88958689) lifter.
Originally developed for GM's professional racing program, the CTS-V.R lifter features reduced hydraulic plunger travel, a ceramic check ball, and additional refinements aimed at maximizing hydraulic stability during sustained high-RPM operation.
While many professional builders successfully use LS7 lifters in demanding performance applications, the CTS-V.R represents GM's premium hydraulic roller offering for customers seeking every possible advantage in extreme racing environments.
For approximately 90% of high-performance LT builds, however, the LS7 lifter remains an outstanding choice that delivers exceptional reliability at a more affordable price point.
Advantages
Genuine GM Performance Component
Industry-proven reliability
Perfect upgrade during AFM/DoD deletion
Compatible with aftermarket hydraulic roller camshafts
Excellent availability
Outstanding value
Trusted by professional engine builders
Proven in countless street and race applications
One of the most popular hydraulic lifters for LS & LT engines
Specifications
Manufacturer: General Motors
GM Part Number: 12499225
Type: Hydraulic Roller Lifter (Non-DoD)
Quantity: Set of 16
Internal Check Ball: Steel
Roller Bearing Design: 18 × .062" needle bearings with .140" roller
Compatibility: Gen III & Gen IV LS engines and Gen V LT engines utilizing non-DoD lifter trays and compatible valvetrain components.
Griffin Motorsports Recommendation
If you're looking for one of the most trusted, proven, and cost-effective hydraulic roller lifters available for your LS or LT engine, it's hard to beat the genuine GM LS7 lifter. Whether you're deleting DoD or building a serious performance engine, these lifters have earned their reputation by delivering dependable performance year after year. For most enthusiasts, they're the perfect combination of quality, reliability, and value.
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