One Stop Solutions 2329 Radiator

Radiator for Maxima and I30/I35

One Stop Solutions Part Number 2329 is a premium replacement radiator built to match original equipment form and function. It is designed for direct-fit service on select 1999-2004 Nissan Maxima and INFINITI I30/I35 applications, with a downflow layout and integrated concentric transmission oil cooler.

• Direct-fit radiator for 1999 Nissan Maxima from 4/99, 2000-2003 Nissan Maxima, 2000-2001 INFINITI I30, and 2002-2004 INFINITI I35
• Downflow design with plastic tanks and PA core material
• Integrated concentric transmission oil cooler included
• Core dimensions: 27 1/16 in. wide, 15 3/4 in. high, 5/8 in. thick
• Inlet and outlet diameters: 1 3/8 in.
• Engine oil cooler not included; cap not included
• Built with premium-grade tubes, fins, headers, and tanks for durability

OE-Style Cooling Performance

This One Stop Solutions radiator, Part Number 2329, is engineered to follow original equipment dimensions and cooling layout for Nissan Maxima and INFINITI I30/I35 fitments. The radiator uses a single-row core, concentric transmission cooler, and factory-style component placement to support proper coolant flow and transmission fluid heat exchange. OSC also applies design updates such as enhanced fin density and thicker core construction where needed to address heat load and long-term wear in higher-mileage vehicles.

This part cross-references APDI 8012329 for the same application.

Common Problems This Radiator Can Address

• Coolant leaks from a cracked or aging radiator tank
• Overheating caused by restricted or inefficient heat transfer
• Transmission fluid temperature issues related to a failing internal cooler
• Corrosion or premature wear in the radiator core and tubes
• Poor fitment or sealing from a damaged original unit

Installation Notes

Verify radiator dimensions, inlet and outlet size, and transmission cooler routing before installation. This radiator is a downflow unit, so confirm the vehicle’s original configuration matches the replacement part. The unit is pressure tested during production, and the die-cut gasket design is used to help maintain a secure seal. For best results, inspect hoses, clamps, and coolant condition during replacement.

Quality Assurance

OSC tests the radiator core before assembly, then tests the completed unit again after assembly. Transmission and engine oil cooler circuits are also checked prior to installation into the tank. The finished radiator is pressure tested during production to help confirm sealing and performance.