GReddy 12023303 Silicone Radiator Hose Kit Skyline GT-R R33 R34

Vehicle Fitment

• 1995-1998 Nissan Skyline GT-R (BCNR33 / R33; RB26DETT)
• 1999-2002 Nissan Skyline GT-R (BNR34 / R34; RB26DETT)

Fitment Notes

• Fits both the BCNR33 (R33 GT-R) and BNR34 (R34 GT-R) chassis - both equipped with the RB26DETT twin-turbocharged inline-6 engine. Confirm your specific chassis code before ordering.
• This is a genuine replacement-type hose set - the upper and lower radiator hoses are included in the kit, replacing both factory rubber hoses with a direct-fit silicone upgrade.
• Compatible with the GReddy Aluminum Radiator TW-R for the BNR34 Skyline GT-R - some models may require cutting for proper fitment with the aluminum radiator. Verify fitment requirements for your specific radiator configuration before installation.
• Tridon stainless steel hose bands are included - no need to source separate hose clamps for installation.

Features

• 3-ply silicone construction with polyester fiber reinforcement - the three-layer design combines silicone's high heat tolerance and chemical resistance at the inner and outer surfaces with a polyester fiber middle layer that provides structural reinforcement against hose expansion and collapse under both positive and negative pressure conditions. This multi-layer approach delivers significantly better pressure resistance, heat resistance, and long-term durability compared to single-wall rubber OEM radiator hoses.
• Genuine replacement-type fitment - each hose in the kit is shaped to match the routing geometry of the original factory radiator hoses at their respective connection points on the BCNR33 and BNR34 cooling systems, allowing a direct swap without modification to the factory routing or fittings in most applications.
• Improved pressure resistance over OEM - silicone's higher pressure tolerance compared to aging factory rubber prevents hose ballooning or deformation under elevated coolant system pressures, which is particularly relevant for performance-modified RB26DETT applications where coolant system operating conditions may exceed factory parameters.
• Improved heat resistance over OEM - silicone maintains structural integrity and flexibility at higher sustained temperatures than natural rubber, preventing the hardening, cracking, and eventual failure that occur in factory rubber hoses after extended high-heat cycling. Critical for turbocharged applications where underhood temperatures are elevated above naturally aspirated baseline levels.
• Improved corrosion resistance over OEM - silicone is chemically inert to the glycol-based coolant formulations used in the GT-R cooling system and is not subject to the internal chemical degradation that can cause rubber hoses to deteriorate and deposit debris into the cooling circuit over time.
• Black outer / blue inner color with GReddy logo - the black outer surface maintains a clean underhood appearance, while the blue inner and GReddy branding are visible at the hose ends where the hose is visible at the fittings.
• Tridon stainless steel hose bands included - Tridon is a recognized name in hose clamp manufacturing, and the stainless steel construction resists corrosion at the clamp over the service life of the hoses.

Specifications

• Part Number: 12023303
• Brand: GReddy / Trust Japan
• Type: Silicone Radiator Hose Kit - Upper and Lower Set
• Construction: 3-ply (silicone inner, polyester fiber reinforcement, silicone outer)
• Color: Black outer / Blue inner; GReddy logo
• Hose Bands: Tridon stainless steel (included)
• Compatible Radiator: OEM radiator; also compatible with GReddy Aluminum Radiator TW-R BNR34 (some fitments may require cutting)

Included Components

• 1x Upper silicone radiator hose - BCNR33/BNR34 fitment
• 1x Lower silicone radiator hose - BCNR33/BNR34 fitment
• Tridon stainless steel hose bands

Product Description

The GReddy 12023303 is the silicone radiator hose kit for the Nissan Skyline GT-R BCNR33 (R33, 1995-1998) and BNR34 (R34, 1999-2002), covering both upper and lower radiator hoses in a single kit. Developed by GReddy / Trust Japan as a genuine replacement-type upgrade, this kit replaces both factory rubber radiator hoses with 3-ply silicone hoses - each shaped to match the OEM routing geometry of the respective hose position on the RB26DETT cooling system for a direct bolt-in installation in most applications.

The three-ply construction layers silicone at the inner surface - chemically inert to glycol-based coolants and resistant to the internal degradation that causes rubber hoses to deposit debris into the cooling circuit - a polyester fiber reinforcement layer that prevents hose ballooning and collapse under positive and negative pressure, and silicone again at the outer surface for heat and abrasion resistance. The result is a hose that maintains consistent flow geometry, pressure containment, and structural integrity under the sustained high-heat, turbocharged operating conditions of the RB26DETT more reliably and for a longer service life than the factory rubber hoses it replaces. Tridon stainless steel hose bands are included in the kit for a complete installation without sourcing separate clamps.

The kit is compatible with the GReddy Aluminum Radiator TW-R for the BNR34 GT-R - some configurations may require cutting for proper fitment when used with the aluminum radiator rather than the OEM unit. Verify your specific radiator configuration before installation. Hoses are finished in black outer / blue inner with the GReddy logo, providing clean underhood appearance with brand identification at the hose ends.