1970 to 1981 Pontiac Firebird - Cold Case GPF18 - Radiator Options

Upgrade your 1970–1981 Pontiac Firebird or Trans Am's cooling system with a Cold Case GPF18-family aluminum radiator. Choose manual or automatic transmission and polished aluminum or powder-coated black Night Rider finish. OE-style stamped tanks retain a factory-inspired appearance.

Choose your version

• GPF18: Manual transmission, polished finish.
• GPF18B: Manual transmission, black Night Rider finish.
• GPF18A: Automatic transmission, polished finish.
• GPF18AB: Automatic transmission, black Night Rider finish, with 5/16-inch inverted-flare transmission cooler fittings.

Matching fan shroud

Pair your radiator with Fast Monty's Garage dual 14-inch fan shroud for Cold Case GPF18. Its fitment list names GPF18, GPF18B, GPF18A and GPF18AB, with raw aluminum or black finish options. Shroud sold separately; fans are not included. Review compatible fan models and installation details in the shroud listing.

Construction and features

• 100% TIG-welded aluminum construction
• Two rows of 1.25-inch tubes
• 16 fins per inch with corrugated fins for increased surface area
• OE-style tanks
• Pressure tested
• Black Night Rider versions are listed as compatible with the factory fan shroud

Dimensions — all four versions

• Core: 18.4 inches high × 27.5 inches wide
• Overall: 18.8 inches high × 33.2 inches wide × 3 inches thick
• Upper and lower hose connections: 1.57 inches

Fitment notes

Supplier descriptions list direct fitment for 1970–1981 Pontiac Firebird and Trans Am. Select the version for your transmission and confirm mounting clearance and hose connections before ordering.

Legacy part number listed for both polished versions: RFE18L.

Warranty: Limited Lifetime Warranty.

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