Moroso High Volume Oil Pump – GM LS Gen IV (LS3 / LS7 / LS9 / LSA / L76 / L92 / L99) | 22177

Moroso’s high volume oil pump for the GM LS Gen IV small block — a direct replacement for the factory oil pump with increased flow capacity to maintain oil pressure at high RPM and under sustained high-load conditions. A standard upgrade on any serious Gen IV LS build: naturally aspirated high-RPM builds, forced induction applications, and track or race engines where the factory pump’s output becomes the limiting factor in oil system performance. Gen IV specific — not compatible with Gen III LS engines (LS1, LS6, LS2). Confirm your specific engine generation before ordering.

Why a High Volume Oil Pump on the LS Gen IV

The factory LS Gen IV oil pump is adequate for a stock or mildly modified engine operating within its designed RPM and load range. On a modified build — higher RPM, increased bearing clearances from a performance rebuild, additional oiling demands from a dry sump pre-oiler or turbocharger oil feed, or sustained high-load track use — the factory pump’s output can drop below the threshold needed to maintain adequate oil pressure at all engine positions. Oil pressure loss at high RPM is not a gradual problem: it results in bearing starvation, accelerated wear, and in severe cases catastrophic engine failure. The Moroso high volume pump moves more oil per revolution than the factory unit, maintaining pressure across the full RPM range and providing a meaningful safety margin for modified and high-performance Gen IV LS builds. At $382 against the cost of an LS engine rebuild, it is one of the highest-value insurance upgrades available for the platform.

Gen III vs. Gen IV — Fitment Note

The GM LS family spans two primary generations with different oil pump designs. The Gen III (LS1, LS6, LS2 — 1997–2007) and Gen IV (LS3, LS7, LS9, LSA, L76, L92, L99 — 2007+) use different oil pump configurations and are not interchangeable. The Moroso 22177 is engineered specifically for the Gen IV architecture. Confirm your engine’s generation before ordering — if you have a Gen III LS, a different Moroso part number is required.

Key Features

• High Volume Flow: Increased oil flow capacity over the factory pump — maintains oil pressure at high RPM and under sustained high-load conditions where the factory pump’s output is insufficient. Critical for modified, high-RPM, and forced induction Gen IV LS builds
• Direct Replacement: Bolt-in replacement for the factory Gen IV LS oil pump — uses the factory mounting points and drive interface. No additional modification required for installation
• Street, Track, and Race: Suitable for street/strip, track day, and full race Gen IV LS applications. The high volume pump provides meaningful benefit across all performance use cases where the factory pump is a limiting factor
• Moroso Quality: Moroso is one of the most established performance engine component manufacturers in the US — with decades of experience supplying oiling system components for drag racing, road racing, and high-performance street applications. The 22177 is a well-proven part in the LS performance community

Fitment

• GM LS Gen IV — LS3 (6.2L), LS7 (7.0L), LS9 (6.2L supercharged), LSA (6.2L supercharged), L76 (6.0L), L92 (6.2L), L94 (6.2L), L99 (6.2L AFM)
• Applications include: Chevrolet Corvette C6 (2008+), Camaro SS/ZL1 (2010+), Cadillac CTS-V (2009+), Pontiac G8 GXP, and GM truck/SUV 6.0L/6.2L Gen IV applications

Gen IV LS only — not compatible with Gen III LS engines (LS1, LS6, LS2). Verify your specific engine code and generation before ordering. Professional installation by a shop experienced with LS engine oiling systems is recommended. A full oil system inspection — including oil pickup tube, windage tray, and pan — should be performed at the time of pump installation on any performance build.

Specifications

• Brand: Moroso
• Part Number: 22177
• Type: High Volume Oil Pump
• Application: GM LS Gen IV (LS3, LS7, LS9, LSA, L76, L92, L94, L99)
• Weight: 3 lbs

Installation Note: Professional installation is recommended. Prime the oil pump before initial startup after installation — running a dry oil pump on first start can cause pump damage and delayed oil pressure buildup. Inspect the oil pickup tube, screen, and gasket at the time of installation and replace if worn or damaged. A high volume pump paired with a stock oil pan and pickup may require verification that the pickup tube clearance is correct for the increased flow rate.