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Correct Push Rod Depth For Short Stroke Boosters
Some power booster push rods do not reach deep enough into a Wilwood tandem master cylinder bore for proper engagement. The Wilwood 300-13885 spacer fills that gap, letting the push rod fully seat without altering pedal feel or stroke geometry on most power brake applications.
Key Features
- Reduces overall depth of the master cylinder piston recess
- 1.62in length with a .468in diameter
- Fully radiused ends prevent binding against the piston
- Machined from high strength aluminum alloy
- Compatible with most power brake applications using Wilwood's aluminum tandem master cylinder
Specifications
| Detail | Value |
|---|---|
| MPN | 300-13885 |
| UPC | 889545025668 |
| Type | Push rod spacer |
| Material | Aluminum alloy |
| Length | 1.62in |
| Diameter | .468in |
| Compatible With | Wilwood aluminum tandem master cylinder |
| Warranty | Manufacturer limited warranty against defects |
What's Included
- 1 aluminum push rod spacer
About Wilwood
Wilwood Engineering has manufactured performance brake components since 1977. Its tandem master cylinder line includes correctly matched hardware, like this push rod spacer, to ensure proper stroke and piston engagement in every installation.
Related Parts on Our Site
- Wilwood aluminum tandem master cylinders
- Wilwood brake pedal assemblies
- Wilwood brake fluid and bleeding accessories
FAQ
What is the 300-13885?It is an aluminum push rod spacer used inside Wilwood's aluminum tandem master cylinder to correct push rod depth.
When do I need this spacer?Use this spacer when a deep push rod retention is not required, typically with power brake boosters that have a shorter push rod.
What is the length and diameter of this spacer?The spacer measures 1.62in in length with a .468in diameter.
What material is the spacer made from?It is machined from high strength aluminum alloy.
Will this spacer fit any master cylinder?This spacer is designed specifically for use in Wilwood's aluminum tandem master cylinder.
Does this spacer work with manual brake applications?It is intended for use with most power brake applications rather than manual, non-boosted systems.
Why does the spacer have radiused ends?The radiused ends prevent binding as the push rod contacts the master cylinder piston.
How many spacers come in this package?This package includes one push rod spacer.
Install Instructions
- Remove the existing push rod from the booster or pedal assembly
- Check current push rod engagement depth in the master cylinder bore
- Insert the spacer into the piston recess before reinstalling the push rod
- Reinstall the push rod and confirm full engagement without excess play
- Reconnect the master cylinder to the booster and torque mounting hardware to spec
- Bleed the brake system and verify proper pedal feel and travel before driving
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