Cardone
Vacuum Power Brake Booster

Cardone 53-2721 Power Brake Booster

Brand Cardone 53-2721
Brake Booster Diaphragm Style Dual
Color Gray
Diaphragm Diameter (in) 9.22
Diaphragm Diameter (mm) 234.188
E-Waste No
Master Cylinder Included No
Master Cylinder Stud Thread Size M8 x 1.25
Material Steel
Package Contents Booster; Instruction Manual
Product Condition Remanufactured
Product line Vacuum Power Brake Booster
Fits Honda and Isuzu · 16 vehicles

Remanufactured to match O.E. performance. Built and tested for reliable fit and function.

Dual-diaphragm design. Delivers strong brake assist in a compact steel housing.

Rust-prohibitive finish. Helps extend service life and resist corrosion.

Cross-references Honda 8971006840, Isuzu 8970480970 and Isuzu 8970480971 for the same application. See all 5.

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Order total $146.01
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Free returns within 60 days if it doesn't fit when fitment is verified.

Vacuum Power Brake Booster for Honda and Isuzu

Cardone 53-2721 is a remanufactured vacuum power brake booster built to restore brake assist performance on select Honda and Isuzu applications. It is re-engineered and tested to match original equipment function, with fitment for vehicles that do not use a master cylinder on the booster assembly.

The Cardone Vacuum Power Brake Booster line focuses on OE-style replacement parts that are inspected for design improvements where applicable. This remanufactured unit uses a dual-diaphragm design and a steel housing with a gray finish for a direct-fit service replacement.

Key Features

  • Remanufactured to match OE performance
  • Dual diaphragm style for brake assist support
  • 100% tested for fit and function
  • 100% OE-quality seals and check valves installed
  • Rust-prohibitive finish helps extend service life
  • Master cylinder output rods are pre-adjusted when included
  • Steel construction with gray finish
  • Guaranteed fit and function

Product Details

Cardone 53-2721 is a vacuum power brake booster for 1993-1997 Honda Passport, 1993-1997 Isuzu Rodeo, 1993-1995 Isuzu Pickup, and 1993-1994 Isuzu Amigo. It uses a dual 9.22-inch diaphragm and an M8 x 1.25 master cylinder stud thread size. The booster is supplied as a remanufactured steel unit with an instruction manual, and the master cylinder is not included.

This part cross-references Honda 8971006840 and Isuzu 8970480970 for the same application. Search terms such as 1994 Honda Passport brake booster replacement, 1993-1997 Isuzu Rodeo vacuum brake booster, and Cardone 53-2721 power brake booster help identify the correct OE-style service part.

What It Helps Address

  • Hard brake pedal feel from reduced vacuum assist
  • Brake pedal effort that has increased over time
  • Loss of consistent brake booster response
  • Replacement needs after booster diaphragm or seal wear
  • Service repair on vehicles lacking a master cylinder on the booster assembly

Installation Notes

Verify vehicle application before installation, especially on 1993-1997 Honda Passport and 1993-1997 Isuzu Rodeo models. Confirm master cylinder stud thread size, booster depth, and pedal linkage alignment before bolting the unit in place. Transfer and inspect related vacuum and brake system components during service so the replacement booster can operate correctly after installation.

Quality Assurance

Cardone remanufactures this booster to OE performance standards and tests every unit for reliable operation. The design is reviewed for potential improvements, and a rust-resistant finishing process is used to support longer service life.

This part fits 16 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersPositionNotes
1997HondaPassportN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1997IsuzuRodeoN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1996HondaPassportN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1996IsuzuRodeoN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1995HondaPassportN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1995IsuzuPickup4WDN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1995IsuzuRodeoN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1994HondaPassportN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1994IsuzuAmigo2.6LL4N/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1994IsuzuPickup3.1LV6N/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1994IsuzuPickup2.6LL4N/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1994IsuzuRodeoN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1993IsuzuAmigo2.6LL4N/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1993IsuzuPickup3.1LV6N/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1993IsuzuPickup2.6LL4N/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1993IsuzuRodeoN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Honda — 8971006840Isuzu — 8970480970Isuzu — 8970480971Isuzu — 8970480980Isuzu — 8971006840