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Wilwood O-Ring Kit - GP200/ 300/310/320/340 Square Seal - 4 pk. Wilwood WIL130-3602
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Wilwood O-Ring Kit - GP200/ 300/310/320/340 Square Seal - 4 pk.

Wilwood
WIL130-3602
889545007985
Brake Caliper Rebuild Kits
20+ Units In Stock - Ships Next Business Day
$ 17.99 $ 13.54
$ 13.54

SKU: 130-3602 | UPC: 889545007985

Wilwood O-Ring Kit - GP200/300/310/320/340 Square Seal - 4 pk. Fits All Years Wilwood GP Series Calipers

This Wilwood O-Ring Kit includes four square section seals with .729 inch ID x .070 inch cross-section for piston sealing in GP200 GP300 GP310 GP320 and GP340 calipers. These O-rings ensure fluid-tight operation to stop leaks under high-pressure braking in racing and performance applications. Kit arrives direct from Wilwood for fast caliper rebuilds in brake caliper rebuild kits.

Key Features

  • Precise Sizing: .729 ID x .070 CS matches GP series caliper bores for exact fit and reliable compression.
  • Square Profile Design: Provides greater contact area than round O-rings to resist extrusion under extreme brake pressure.
  • High-Temp Elastomer: Resists degradation from brake fluid heat up to 400F and repeated cycling for extended service life.
  • 4-Pack Quantity: Includes spares for rebuilding multiple calipers or keeping on-hand for trackside service.
  • Manufacturer Direct: Engineered and produced by Wilwood for consistent quality in every rebuild.

Product Notes

  • Inspect caliper bores for scoring before installing new O-rings.
  • Store in cool dry place to maintain material integrity.
  • Packaged in protective poly bag for clean delivery.

Installation Notes

  • Professional installation recommended.
  • Lubricate O-rings with Wilwood assembly fluid during install.
  • Compatible with standard Wilwood caliper rebuild kits and hardware.

This Part Fits

Year Make Model Submodel
All Years Wilwood GP200 Square Seal Caliper
All Years Wilwood GP300 Square Seal Caliper
All Years Wilwood GP310 Square Seal Caliper
All Years Wilwood GP320 Square Seal Caliper
All Years Wilwood GP340 Square Seal Caliper

Why Choose Wilwood?

  • Proven components in NHRA NASCAR and SCCA racing.
  • Brake parts built for high-heat high-pressure demands.
  • Exact engineering tolerances for zero-compromise sealing.

Frequently Asked Questions

  • Q: Which calipers use these O-rings?
    A: Designed exclusively for Wilwood GP200 GP300 GP310 GP320 GP340 models with square seal pistons. Confirm your caliper series before ordering.
  • Q: What material resists brake fluid best?
    A: Advanced fluoroelastomer compound handles DOT 3/4/5 fluids glycol ethers and temperatures over 400F without swelling or cracking.
  • Q: How long is the warranty on this kit?
    A: Wilwood offers 90-day defect coverage. performance depends on proper installation and compatible rebuild procedures.

Shipping &amp. Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Poly bag in 4 x 4 x 1 inch box
  • Weight: 0.10 lbs

Request For Information

Have questions about Wilwood O-Ring Kit - GP200/ 300/310/320/340 Square Seal - 4 pk.? Fill out the form below and we'll get back to you by the next business day.
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