Boost diaphragms are used to automatically increase the fuel supply as the turbo pressure increases. Symptoms of a split diaphragm are usually loss of power and possibly pressurising of the fuel tank.
Some early pumps used a vacuum advance mechanism which also utilised a rubber or leather diaphragm.
Mechanical lift pumps also use a membrane which will often split with age
Showing 1–16 of 43 results
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Lucas Delphi DPC LDA boost control diaphragm set (later type)
£13.50 Add to cart -
Lucas Delphi DPC LDA boost control diaphragm and piston kit (early type)
£31.35 Add to cart -
Bosch VE LDA fuel injection pump manifold boost diaphragm membrane. Genuine Bosch
£15.34 Add to cart -
Lift pump diaphragms for CAV DFP3 pumps
£11.15 Add to cart -
Lucas Delphi DPC LDA boost control diaphragm set (early type)
£16.79 Add to cart -
Lucas CAV DPS and DP200 fuel injection pump boost diaphragm membrane 7182-580A
£8.61 Add to cart -
Lucas Delphi DPC LDA boost control diaphragm and piston kit (later type)
£32.48 Add to cart -
Lucas CAV fuel injection pump diaphragm and piston for BPE4A, BPE6A, AA, N and NN pumps
£28.84 Add to cart -
CAV fuel injection pump diaphragm and piston for Perkins engines with CAV BPE pumps
£30.58 Add to cart -
Lucas CAV DPS fuel injection pump boost diaphragm and piston
£23.01 Add to cart -
Simms fuel injection pump diaphragm and piston for SPE3A pumps
£30.58 Add to cart -
SIMMS fuel injection pump diaphragm for Simms SPE4A, SPE6A with GPD governor
£21.50 Add to cart -
Lucas/Delphi DP200/DP210/DP310 fuel injection pump top boost diaphragm kit
£28.60 Add to cart -
Bosch VE LDA fuel injection pump manifold boost diaphragm membrane
£8.94 Add to cart -
Lift pump diaphragm Y Type
£9.12 Add to cart -
Lift pump diaphragm U type 7971211
£10.30 Add to cart