SKU: 20981 | UPC: 690092152437
Vibrant Performance Black Billet Aluminum Radiator Cap 19 PSI 20981 – Universal Fit
This Vibrant Performance radiator cap maintains 19 PSI pressure in cooling systems to prevent boil-over and coolant loss. It fits radiator filler necks with 1.38-inch outer diameter found on most domestic, import, and performance vehicles. Built for daily drivers and race cars, it delivers consistent pressure retention with leak-proof sealing.
Key Features
- CNC Machined Billet Aluminum: Forged from 6061-T6 aluminum for strength that handles repeated heat cycles and pressure spikes without failure
- Black Anodized Finish: Protects against corrosion, chemicals, and road salt for years of service in harsh conditions
- 19 PSI Pressure Rating: Matches OEM and performance specs to keep coolant at efficient boiling point during high-load operation
- Premium Rubber Seal: Creates airtight barrier that resists cracking and hardening for dependable long-term performance
- Included Gasket: Pre-installed O-ring ensures immediate bolt-on fit without additional parts
Product Notes
- Measure filler neck outer diameter at 1.38 inches to confirm compatibility
- Inspect cooling system for damage before installing new cap
- Store in cool dry place to preserve rubber seal integrity
Installation Notes
- Professional installation recommended.
- Twist on by hand until snug, then quarter-turn more. avoid tools to prevent seal damage
- Direct fit for OEM-style necks. no modifications required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Vehicles with 1.38″ Filler Neck | N/A |
| 1960-2023 | Chevrolet | Camaro, Corvette, Silverado | All |
| 1965-2023 | Ford | Mustang, F-150, Bronco | All |
| 1980-2023 | Honda | Civic, Accord | All |
Why Choose Vibrant Performance?
- Earned trust of racing teams and mechanics worldwide through proven reliability
- Manufactured to strict quality controls for consistent performance across applications
- Complete cooling and oil system lineup from one reliable source
Frequently Asked Questions
- Q: Does this cap fit my radiator neck?
A: Designed for 1.38-inch outer diameter necks standard on most GM, Ford, Mopar, Honda, Toyota, and European vehicles since 1960 - Q: What material and finish are used?
A: CNC machined 6061-T6 billet aluminum body with hard black anodized coating and Viton rubber seal - Q: What is the warranty and install process?
A: Backed by Vibrant limited warranty. installs in seconds by hand-tightening onto clean neck threads
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Retail box measuring 1.875 x 1.875 x 2.625 inches
- Weight: 0.25 lbs
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