Moroso Radiator Cap 27-29 LB | 27-29 PSI Pressure Rating | Racing Radiator Cap
Overview
The Moroso Radiator Cap 27-29 LB is a precision-engineered racing radiator cap designed to maintain optimal pressure in high-performance cooling systems. This cap fits standard-size radiator filler necks and is ideal for Subaru enthusiasts looking to ensure consistent cooling system performance under demanding conditions. Whether you're upgrading your cooling system for track use or enhancing reliability for spirited driving, this cap provides a dependable seal and pressure control.
Crafted with a stainless steel spring and a solid brass spring retainer, the Moroso radiator cap reflects a commitment to durability and precision. The steel spring ensures the pressure setting remains accurate over time, preventing premature coolant loss and overheating. The six-sided design allows for easy tightening and removal, making maintenance straightforward without sacrificing reliability.
For Subaru owners, maintaining proper cooling system pressure is critical to engine longevity and performance, especially when running modified or high-output setups. This radiator cap’s 27-29 psi rating supports higher boiling points in the coolant, reducing the risk of vapor lock and overheating during aggressive driving or track sessions. Its compatibility with standard filler necks, including several Moroso models, makes it a versatile upgrade for a variety of Subaru platforms.
Features & Specifications
This Moroso radiator cap is engineered for standard-size radiator filler necks and features a 27-29 psi pressure rating. Constructed with a stainless steel spring and solid brass spring retainer, it delivers reliable pressure control and durability for Subaru enthusiasts seeking enhanced cooling system performance.
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Brand: Moroso
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Product: Radiator Cap 27-29 LB
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Part Number: 63328
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Fitment: Standard-size radiator filler necks
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Material: Stainless steel spring, solid brass spring retainer
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Finish: Polished metal
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Construction: Precision machined with six-sided cap design
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Origin: Not specified
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Pressure Rating: 27-29 psi (pounds per square inch)
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Compatibility: Fits Moroso radiator filler necks Nos. 63420, 63465, 63466, 63467, 63485, 63486, 63650, 63651, 63656, 63730, 63740, 63745
Key Benefits
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Performance: Maintains consistent cooling system pressure to prevent overheating during high-load conditions
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Durability: Stainless steel spring and brass retainer resist corrosion and maintain pressure accuracy over time
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Fitment: Compatible with a wide range of standard radiator filler necks, including multiple Moroso models
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Ease of Use: Six-sided cap design allows for easy tightening and removal without special tools
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Reliability: Supports higher coolant boiling points, reducing vapor lock risk for Subaru engines under stress
What's Included
- 1× Moroso Radiator Cap 27-29 LB
Installation & Compatibility
Installation of the Moroso Radiator Cap 27-29 LB is straightforward and DIY-friendly, requiring no special tools beyond a standard wrench or pliers for the six-sided cap. It fits standard radiator filler necks and is compatible with a variety of Moroso neck models, but Subaru owners should verify their radiator neck size and compatibility before purchase. No modifications are required, and the cap can be swapped directly with the factory radiator cap. This cap does not require tuning but is recommended for vehicles with upgraded or high-performance cooling systems to maintain proper pressure.
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Professional Installation: DIY-Friendly
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your radiator filler neck size and model
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