APEXi A'PEXi - GT-Spec Radiator Cap ** IN STOCK ** Type-S
APEXi A'PEXi - GT-Spec Radiator Cap ** IN STOCK **
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28 in stock
Shipping & returns
Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
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Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
Read the full return policyReturn details & how to start
Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.
Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.
Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.
After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.
Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.
For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
A’PEXi GT-Spec Radiator CapThe 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 or Aftermarket 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.
** SOME AFTERMARKET RADIATOR CAP WILL USE SPECIFIC CAP SO PLEASE CHECK YOUR RADIATOR **
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 |
