A'PEXi - GT-Spec Radiator Cap ** Pre-Order : ETA Late December ** media thumbnails
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A'PEXi - GT-Spec Radiator Cap ** Pre-Order : ETA Late December **

APEXi Part Number: 591-A003

$45.00

Shipping calculated at checkout

Type: Type-S

Sold Out - Not In Stock -

A’PEXi GT-Spec Radiator Cap

The A’PEXi GT-Spec Radiator Cap is a high-performance replacement designed to enhance your vehicle’s cooling efficiency and reliability. Engineered to hold 1.3 kg/cm² (127kpa) of pressure, this cap increases the boiling point of the coolant, allowing your cooling system to operate more effectively under demanding conditions, from spirited street driving to high-temperature track use.

Available in two fitment types, Type-S and Type-N , to suit most factory and aftermarket radiators.

Features:

  • Maintains 1.3 kg/cm² (127kpa) pressure for improved cooling performance
  • Raises coolant boiling point for enhanced thermal efficiency
  • High-quality materials ensure long-term durability and sealing integrity
  • Available in Type-S (spring-loaded) and Type-N (flat-type) to fit a wide range of applications
  • Laser edged logo directly on the caps for the newly designed GT-Spec caps
  • Comes original design rose golden radiator emblem sticker

Fitment Note:
Please check your OEM radiator cap to confirm whether it is a spring-loaded (Type-S) or flat-type (Type-N) design. Fitment may vary depending on vehicle year, model, or manufacturer specifications.

S - Sealed/System type (vented)  /  N - Non-vented/Normal type

TYPE-S : Spring Loaded
(591-A003)
  TYPE-N : Flat Type
(591-A004)
- Nissan (Most)
- Subaru (Most)
- Mazda (Most)
- Toyota (Some)
- Mitsubishi (Some)
- Honda (Most)
- Toyota 86 / Scion FRS
- Subaru BRZ
- Toyota (Some)
Part Number TYPE-S (Spring Loaded) : 591-A003
TYPE-N (Flat Type) : 591-A004
Fitment Type Universal
Special Notes Please check your vehicle for which type are used
- Spring-loaded Type
- Flat Type
⚠️ WARNING: California Prop 65
Cancer & Reproductive Harm 
www.p65warnings.ca.gov