Boundary MM-S1-M Ford Modular V8 Oil Pump Assembly with MartenWear Treatment

The Boundary MM-S1-M is a Stage 1 high-flow oil pump assembly built for the Ford Modular V8 (4.6L and 5.4L), featuring Boundary's proprietary MartenWear surface treatment on the billet gear set for enhanced wear resistance and longevity. Built on the larger-volume Ford 3V housing, this pump delivers the highest oil flow of any Modular-compatible pump configuration, offering superior mid-range and low-end engine protection compared to stock.

Boundary manufactures its gear sets from heat-treated 4140 chromoly billet steel in-house at their Texas facility—replacing the OEM powdered-metal construction and providing dramatically greater yield strength and durability under high-load and high-RPM conditions.

Assembly Process:

• Pump is fully disassembled; all components undergo ultrasonic cleaning, air blast, and hand inspection
• Pump housing is hand de-burred for a precise fit
• Industry-leading mirror-finished billet gear set with MartenWear treatment installed
• Stainless Torx fasteners replace OEM hardware
• All fasteners torqued to spec with Loctite applied to prevent back-out or loosening
• Anaerobic sealant applied to critical areas to boost pump prime speed and reduce aeration
• Assembly lubricant applied to all critical surfaces for rapid startup oiling
• Precision-machined O-ring groove on pump mounting face for a positive seal against the engine block
• Each unit blueprinted and shipped with an individual specification sheet

Key Features:

• Proprietary MartenWear surface treatment on billet gear set for superior wear resistance
• High-flow Ford 3V housing — largest available gear volume for Modular V8 platforms
• CNC-machined billet steel gears, flow-tested to 12,000 RPM
• Plug-and-play installation for all 15/16-inch pickup tube vehicles
• Made in the USA — backed by a lifetime warranty

The Boundary MM-S1-M is compatible with all Ford Modular V8 applications including 4.6L and 5.4L variants (DOHC, SOHC, and 3V), excluding the 6.2L. It is a direct bolt-on replacement requiring no additional machining or preparation.