Amtech Brake Piston Wind Back Tool Right Hand Treaded European and Japanese Cars I8020

Amtech Brake Piston Wind Back Tool European and Japanese Cars - Right Hand Thread

Barcode: 5032759043231

MPN: I8020

Overview:

The Amtech (I8020) Brake Piston Wind Back Tool is a practical workshop essential for rewinding disc brake caliper pistons during brake pad replacement and servicing. Designed for right-hand thread calipers commonly found on many European and Japanese vehicles, it helps you retract the piston smoothly and safely, reducing effort and saving time compared to improvised methods. The kit includes a reaction plate and a reversible dual pin head, along with two adaptor sizes to suit different pin centre spacings. A 19mm hex end allows easy use with a socket or spanner for controlled turning and consistent results.

Key Features

• Designed for right-hand thread disc brake calipers

• Suitable for many European and Japanese vehicles

• Helps rewind caliper pistons for brake pad changes and servicing

• 19mm hex end for use with sockets or spanners

• Includes reaction plate for stable, controlled operation

• Reversible 3/8" drive dual pin head for versatility

• Supplied with two adaptors for common pin centre sizes

Specifications

• Brand: Amtech

• MPN: I8020

• Barcode: 5032759043231

• Application: Disc brake caliper piston rewind (right-hand thread)

• Drive: Reversible 3/8" dual pin head

• Hex End: 19mm (for socket/spanner use)

• Adaptor / Pin Centres:

  • No. 1: 22mm (13/16")

  • No. 2: 32mm (1 1/4")

• Included: Reaction plate, dual pin head, 2 adaptors

Applications

• Rewinding brake pistons when replacing disc brake pads

• Routine brake servicing and caliper maintenance

• Home mechanic repairs and workshop use on compatible vehicles

• Use where caliper pistons must be rotated and pushed back

How to Use

• Confirm the caliper uses a right-hand thread rewind mechanism

• Select the correct adaptor/pin centre to match the caliper piston face

• Fit the reaction plate and align the tool squarely to the caliper

• Use a 19mm socket or spanner to turn the tool steadily

• Rewind the piston gradually until fully retracted for pad fitting

• Reassemble brakes and follow manufacturer procedures for safe testing

Amtech Brake Piston Wind Back Tool – Key FAQs

• What is the Amtech I8020 used for?
  It’s used to rewind disc brake caliper pistons during brake pad replacement. Many calipers require the piston to be turned right and pushed back rather than forced in.

• Which vehicles does it suit?
  It’s designed for right-hand thread disc brake calipers commonly found on many European and Japanese cars. Always confirm caliper type before use.

• What adaptor sizes are included?
  The kit includes two adaptor/pin centre sizes: 22mm (13/16") and 32mm (1 1/4"), covering many common caliper piston patterns.

• How do I drive the tool?
  It has a 19mm hex end for sockets/spanners and a reversible 3/8" drive dual pin head for controlled, stable operation.

• Do I need to open the brake fluid reservoir?
  Rewinding pistons can raise fluid level. It’s good practice to check the reservoir level before and during the job to avoid overflow and follow vehicle manufacturer guidance.

• Can I use this tool on left-hand thread calipers?
  This tool is intended for right-hand thread calipers. Some vehicles use different thread directions or systems, so check your caliper requirements before use.

• Why shouldn’t I force a piston back with a clamp?
  Some calipers must be rotated to retract correctly. Forcing them can damage the mechanism, seals or caliper, and may lead to poor brake performance.

• Is this suitable for professional use?
  Yes, it’s suitable for workshop and DIY use where compatible. Using the correct adaptor and keeping the tool square to the piston helps achieve the best results.