Complete Miyaco brake master cylinder rebuild kit displayed, including pistons, springs, seals, and fittings, specifically designed for Honda Acty HA3, HA4 models from 1990-1999, ready to restore optimal brake function.
Complete Miyaco brake master cylinder rebuild kit displayed, including pistons, springs, seals, and fittings, specifically designed for Honda Acty HA3, HA4 models from 1990-1999, ready to restore optimal brake function.
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Complete Miyaco brake master cylinder rebuild kit displayed, including pistons, springs, seals, and fittings, specifically designed for Honda Acty HA3, HA4 models from 1990-1999, ready to restore optimal brake function.Complete Miyaco brake master cylinder rebuild kit displayed, including pistons, springs, seals, and fittings, specifically designed for Honda Acty HA3, HA4 models from 1990-1999, ready to restore optimal brake function.

Brake Master Cylinder Rebuild Kit - Honda Acty Truck HA3, HA4 Models - 1990-1999

Oiwa Garage
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Price:
$99.97
Stock:
In stock

Need help? Call or Text: 562-661-8862

Description

This brake master cylinder rebuild kit fits the Honda Acty Truck HA3, HA4 (1990-1999). It reseals the master cylinder that pushes fluid to all four brakes.

In Stock - ships from our California (USA) warehouse

Fast, reliable delivery - no overseas backorder wait.

Vehicle Fitment & Compatibility

Confirm your chassis code against the table below before ordering.

Honda Acty Truck HA3, HA4 (1990-1999) - fitment
Make Honda
Model Acty Truck
Chassis Codes HA3, HA4
Years 1990-1999
Part Type brake master cylinder rebuild kit

100% Fitment Guarantee

Not sure about fit? Add your chassis/VIN number at checkout and we confirm it before we ship. If a part does not fit your Acty, we exchange it or refund you in full.

Reasons to choose this brake master cylinder rebuild kit

  • A pedal that slowly sinks under steady pressure
  • Fluid loss with no external leak
  • A soft or inconsistent pedal
  • You are refreshing the brake hydraulics

Features & Function

  • Reseals the brake master cylinder
  • Matched to the Acty master cylinder
  • Restores a firm, holding pedal

Installation Specifications

  • Difficulty: Advanced.
  • Estimated time: about 2 to 3 hours.
  • Required tools: A brake-bleed kit, a socket set, and pick tools.

Oiwa Garage Tech Note

"Inspect the bore for pitting before resealing - a marked master bore will not hold. Bench-bleed the master before fitting, then bleed the whole system."

Frequently Asked Questions

Do I bench-bleed the master?

Yes. Bench-bleed it before fitting, then bleed all four corners and confirm a firm, holding pedal before driving.

How do I know the master cylinder is failing?

Hold steady pressure on the pedal; if it slowly sinks to the floor with no external leak, the master cylinder seals are bypassing internally. That is the classic master-cylinder test.

Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.

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