Key Features & Benefits – Aeromotive A1000 diaphragm
The Aeromotive A1000 diaphragm is a rebuild part for fuel pressure regulators, intended to replace a worn, punctured, or cracked diaphragm. The goal is to restore proper function of the regulator’s diaphragm section.
This diaphragm is used for Aeromotive A1000 and A1000-look regulators. The Epman Racing / MGP regulators sold in the shop range use this diaphragm as well.
When is this useful?
It is useful when regulator behaviour becomes unstable due to diaphragm damage and you want to rebuild the unit by replacing the diaphragm.
Technical specs
- Product type: Diaphragm (rebuild part) for fuel pressure regulators
- Compatibility: Aeromotive A1000; A1000-look Chinese clones; Epman Racing / MGP regulators
- Use case: Replacement for worn, punctured, or cracked diaphragms
- Part number: CGQ04
Selection & installation tips
- Housing layout check: Before disassembly, confirm the regulator’s internal layout matches an A1000-style diaphragm seat.
- Diaphragm comparison: Compare the old diaphragm’s diameter, lip shape, and mounting details to the new part.
- Sealing surfaces: Clean the mating faces and check for burrs or damage that could cut or pinch the diaphragm.
- Reassembly pattern: Tighten fasteners evenly in a cross pattern so the diaphragm stays seated without wrinkling.
- System verification: After assembly, check for leaks and confirm stable fuel pressure behaviour in your setup.
Before replacing, match the regulator housing layout and the old diaphragm geometry to the new part, then verify sealing and system behaviour after installation.
