zaygyize High-Pressure Fuel Pump EP1028 Replacement for GM 2.4L with Seal Gasket & Bolt

This is a zaygyize high-pressure fuel pump assembly (EP1028) with seal gasket and bolt, designed to replace OEM part 12641847 and restore proper fuel pressure to compatible 2.4L GM engines.

Built as a direct-replacement unit, the EP1028 high-pressure fuel pump from zaygyize is engineered to match the fit and function of several GM OEM numbers (including 12641847, 12608371, 12633115 and related references). It includes the pump housing, a new seal gasket and mounting bolt so you receive the parts needed for a straightforward swap. The pump is intended for use on a range of 2.4L four-cylinder models where the factory high-pressure pump controls fuel feed to direct and port injectors.

Which vehicles will this pump fit?

This pump is compatible with many GM vehicles equipped with the 2.4L L4 engine; always verify the original part number before ordering. Common fitments include Buick LaCrosse, Regal, Verano and several Chevrolet and GMC models from model years roughly 2010–2017.

• Buick: LaCrosse (2010–2016), Regal (2011–2017), Verano (2012–2017) with 2.4L engines.
• Chevrolet: Equinox (2010–2017), Captiva Sport (2012–2015), Malibu (2013–2014), Impala (2014) 2.4L variants.
• GMC: Terrain (2010–2017) with the 2.4L four-cylinder.
• Check compatibility: compare your current pump’s OEM number (EP1028, 12641847, etc.) before purchase.

How is the zaygyize pump built and tested?

The EP1028 unit is manufactured from corrosion-resistant materials and undergoes quality control checks to ensure dimensional accuracy and pressure capability. It’s engineered to withstand the elevated pressures needed in modern fuel systems while maintaining consistent actuation for injectors or other pressure-driven components.

• Precision-machined components for accurate fit to factory mounting surfaces.
• Durable materials selected for resistance to fuel and heat exposure.
• Quality checks performed to verify pressure performance and sealing integrity.
• Includes new seal gasket and mounting bolt for a complete replacement.

What should I know about installation and torque?

Installation is straightforward for a technician or experienced DIYer, but following proper alignment and torque specs is important to prevent leaks and ensure correct pump operation. Pre-tighten the mounting bolts evenly so the plunger aligns perpendicular to the camshaft, then torque to the appropriate specification for the bolt size.

• Wear eye protection and use the correct hand tools for safety.
• Pre-tighten both side bolts to square the pump body before final torque.
• Tightening example: M6–8 thread maximum safe load around 33 pounds (15 kg) as a general guide; use factory torque specs when available.
• Refer to model-specific service procedures or installation videos for guidance.

Will this replacement affect engine performance or emissions?

Replacing a worn or leaking high-pressure pump with a properly matched unit helps restore pressure consistency required by the fuel system, which supports normal combustion control. While this pump does not change engine design, restoring correct fuel pressure helps the engine run as intended by the manufacturer.

• Replaces failing or leaking factory pumps to recover correct fuel pressure.
• Helps maintain injector actuation timing and fuel delivery accuracy.
• Designed to meet the same fitment parameters as listed OEM numbers.

Who is this for: The zaygyize EP1028 high-pressure fuel pump kit is for owners and mechanics working on GM vehicles with the 2.4L L4 engine who need a direct replacement for OEM numbers such as 12641847 and related references. Choose this kit if your vehicle shows pressure-related symptoms, if diagnosis points to the high-pressure pump, or if you prefer a complete replacement that includes the required gasket and bolt for reinstallation. Always double-check your vehicle’s part number and repair manual before beginning any fuel-system work.