UZ Swap Complete Cooling System Package

***This item ships in 4 weeks.***

Product Overview

The most complete UZ V8 cooling solution, with seven matched components covering every part of the cooling system for 1UZ-FE, 2UZ-FE, and 3UZ-FE swaps, for 1989–1995 Toyota Pickup and 4Runner chassis. This package exists because sourcing a UZ swap cooling system one part at a time means gambling on fitment between components that were never designed to work together. Everything in this kit, the radiator, shroud, fan, fan controller, upper hose, lower hose, and A/C condenser, is matched from the start. Mount the radiator, bolt on the shroud, drop in the fan, run the hoses, wire the controller, and fit the condenser. No adapters. No improvised brackets. No routing surprises.

This is not a plug-and-play installation. The radiator requires permanent chassis fabrication before any other component is installed: cutting the lower radiator support, cutting the radiator support side brackets, and a minimum 1" body lift. Once the radiator is in place, the remaining six components can be installed without additional chassis modifications. If your recipient chassis is not a 1989–1995 Pickup or 4Runner, contact North West Toys with your core support measurements before ordering.

What's Included

Component	SKU	Description	Qty
UZ Swap Radiator with Cap	573000	Dual-row 1" tube aluminum core, TIG-welded tanks, USA-made, 5-year warranty	1
NWT Aluminum Fan Shroud		Mounts directly to radiator nutserts — no additional fabrication required	1
16" Slim Pull Fan	—	Electric pull fan sized for UZ swap engine bay clearances	1
Variable Speed Fan Controller Kit	573009	Adjustable thermostatic controller, 160–240°F range — thread-in sensor, heavy-duty relay, wiring harness with fuse and connector, relay bracket	1
Upper Radiator Hose (UZ / NWT Radiator)	570064	Pre-shaped EPDM hose with synthetic fiber reinforcement — SAE 20R4 Class D2 and DIN 73411 Class A rated	1
Lower Radiator Hose (UZ / NWT Radiator)	570065	Pre-shaped EPDM hose with synthetic fiber reinforcement — same construction standards as upper hose	1
UZ A/C Condenser — Full-Frame 14×20"	573005	Full-frame aluminum condenser sized for 1989–1995 Pickup and 4Runner chassis with UZ swap	1

 

Key Features & Benefits

• One Order, Complete Cooling System: Every component in this package is designed to work with the others. The shroud seals to the radiator, the fan seats into the shroud, the controller wires to the fan, and the hoses route to the radiator — without adaptation, fabrication, or mismatched fittings.
• Handles V8 Heat Loads: The dual-row 1" tube aluminum radiator provides far more cooling capacity than any factory Toyota radiator in a 1989–1995 chassis — necessary for the sustained combustion heat of a 4.0–4.7L V8 during crawling, towing, or desert running.
• Smart Fan Control, Not Fixed-Temp Switching: The variable-speed fan controller senses the actual coolant temperature (adjustable 160–240°F) and activates the fan only when needed — saving fan motor life, reducing electrical draw, and preventing overshooting or undershooting your target operating temperature.
• TIG-Welded Radiator, No Epoxy: Radiator tanks are fully TIG-welded aluminum. Epoxy-bonded tanks crack and delaminate under repeated thermal cycling — welded tanks don't.
• OEM-Grade Hose Construction: Both upper and lower radiator hoses are pre-shaped EPDM with synthetic fiber knit reinforcement — collapse-resistant under vacuum, chemical-resistant, and rated to SAE 20R4 Class D2 and DIN 73411 Class A standards.
• Full-Frame A/C Condenser Included: The 14×20" condenser is sized for the 1989–1995 chassis with the NWT radiator installed — for builds that retain or add air conditioning, this eliminates the need to source a condenser separately and verify clearance against a radiator you don't have yet.
• USA-Made Radiator, 5-Year Warranty: The radiator is USA-made and backed by a 5-year warranty — confidence you won't find on generic import radiators.

 

Technical Specifications

Engine Compatibility: 1UZ-FE 4.0L V8, 2UZ-FE 4.7L V8, 3UZ-FE 4.3L V8
Radiator Core: Dual-row, 1" diameter aluminum tubes
Radiator Tanks: TIG-welded aluminum (no epoxy)
Radiator Manufacture: Made and machined in the USA
Radiator Warranty: 5 years
Shroud Material: Aluminum — mounts to radiator, no additional fabrication
Fan Size: 16" slim pull, electric
Fan Controller Range: 160–240°F adjustable, variable speed
Fan Controller Kit Contents: Thread-in temperature sensor, heavy-duty relay, wiring harness (fuse + connector), relay bracket
Upper Hose Construction: EPDM tube, synthetic fiber knit reinforcement, EPDM cover — SAE 20R4 Class D2 / DIN 73411 Class A
Lower Hose Construction: EPDM tube, synthetic fiber knit reinforcement, EPDM cover — SAE 20R4 Class D2 / DIN 73411 Class A
A/C Condenser Dimensions: 14×20" full-frame

⚠ Fabrication Requirements — Read Before Ordering

This package is not plug-and-play. The radiator requires the following permanent chassis modifications before installation. The remaining six components can be installed without additional chassis fabrication once the radiator is in place.

• Cut the lower radiator support across the bottom to clear the radiator core
• Cut the radiator support side brackets to achieve proper core width clearance
• Minimum 1" body lift required for adequate hood clearance and proper radiator positioning

These cuts are irreversible. If you are not prepared to perform chassis fabrication, this package is not the right fit for your build. If your recipient chassis is not a 1989–1995 Pickup or 4Runner, contact Northwest Toys with your core support measurements before ordering.

Fitment

Year	Model	Engine (Swap)
1989–1995	Toyota Pickup (2WD & 4WD)	1UZ-FE, 2UZ-FE, or 3UZ-FE V8 swap
1989–1995	Toyota 4Runner	1UZ-FE, 2UZ-FE, or 3UZ-FE V8 swap
Other chassis	Custom / non-standard applications	Contact NWT with core support measurements before ordering

Important: Fitment is determined by the recipient chassis year and model, not by which UZ engine you are installing. All 1UZ-FE, 2UZ-FE, and 3UZ-FE variants use the same package for standard 1989–1995 Pickup and 4Runner applications. This package is designed for use with NWT motor mount and header configurations — confirm compatibility before ordering if you are running a different swap kit.

Installation & Maintenance

Installation Difficulty: Advanced / Expert fabrication required (radiator); Intermediate (all other components once radiator is installed)
Tools Required: Angle grinder or cutting wheel, welder (recommended for reinforcing cut edges), drill, torque wrench, wire crimps or soldering kit, radiator hose clamps, coolant, A/C recovery equipment if retaining air conditioning
Professional Installation: Strongly recommended for radiator chassis fabrication. Fan controller wiring and hose installation can be completed by a competent DIY builder once the radiator is mounted.

Maintenance Tips:

• Use a 50/50 mix of Toyota-compatible coolant and distilled water — tap water causes mineral deposits in aluminum cores that reduce cooling efficiency over time
• Flush and replace coolant every 2 years or 30,000 miles to prevent electrolytic corrosion in aluminum tanks
• Verify fan controller temperature setpoint annually — a controller calibrated too high allows heat soak at low speed and in crawling terrain before the fan activates
• Inspect all hose clamps and nutsert mounting fasteners annually — off-road vibration works hardware loose over time
• Check fan wiring connections and ground quality at each service interval — undervoltage from a poor ground reduces fan output when you need it most

 

Frequently Asked Questions

Q: Does this package work with all three UZ variants — 1UZ-FE, 2UZ-FE, and 3UZ-FE?
A: Yes. All components in this package are compatible with 1UZ-FE, 2UZ-FE, and 3UZ-FE engines. Fitment is determined by the recipient chassis year and model, not by the specific UZ variant you are installing.

Q: What chassis fabrication is required, and does it affect all seven components or just the radiator?
A: Only the radiator requires chassis fabrication. You must cut the lower radiator support across the bottom, cut the radiator support side brackets, and install a minimum 1" body lift. The fan shroud, fan, controller, hoses, and A/C condenser all install without additional cuts or modifications once the radiator is in place.

Q: What does the variable speed fan controller do differently than a standard on/off fan switch?
A: A standard fixed-temp switch activates the fan at a single preset temperature. The variable-speed controller senses live coolant temperature via a thread-in sending unit and activates the fan over an adjustable range (160–240°F), modulating output rather than simply switching on and off. This means the fan responds to actual thermal load — running at lower speed during normal operation and increasing output as temperatures rise — which extends the life of the fan motor and relay while maintaining tighter temperature control during demanding driving.

Q: Is the A/C condenser required, or can I skip it if I'm not running air conditioning?
A: The A/C condenser is included in this package but is only functionally required if your build retains or adds air conditioning. If you are not running A/C, the condenser can be omitted from installation — but the space it occupies in front of the radiator is still available if you add A/C later. If you want this package without the condenser, contact North West Toys to discuss component-level options.

Q: My vehicle is not a 1989–1995 Pickup or 4Runner — can I still order this package?
A: Possibly. Non-standard chassis applications require precise measurements of your core support opening before we can confirm radiator fitment. Contact sales@northwesttoysllc.com with your measurements before ordering.

Q: How long does this package take to ship after ordering?
A: The radiator is built to order. This package ships in approximately 4–6 weeks. Plan your build schedule accordingly.

Q: Is this the same as the Radiator, Fan & Shroud package with extras added?
A: Yes — this package builds on the NWT UZ Swap Radiator Package (Radiator, Fan & Shroud) by adding the variable speed fan controller kit, upper and lower radiator hoses, and the A/C condenser. If you already have hoses, a controller, or don't need A/C, the smaller package may be the better fit.

Signs Your UZ Swap Cooling System Is Undersized or Failing

• Coolant temperature climbing above normal on the highway or in slow trail traffic — especially with the stock factory radiator still in place
• Overheating during low-speed crawling or extended idling in hot weather, where ram airflow through the core is minimal and fan coverage determines operating temperature
• Electric fan running constantly without stabilizing temperature — a sign of insufficient core capacity, not just fan output
• Coolant loss without visible external leaks — often a pressurized system pushing past a degraded radiator cap seal on an undersized or failing core
• Steam or sweet coolant smell from the engine bay after hard use — coolant boiling off from an overworked core
• Cracked, brittle, or delaminated radiator hoses — collapse-prone hoses are a failure point that becomes a full coolant loss event on the trail

 

Why This Package Exists

A UZ V8 produces more combustion heat than any engine Toyota ever put in a 1989–1995 Pickup or 4Runner. The factory cooling infrastructure on these chassis — radiator sizing, hose routing, fan location — was never engineered for it. Builders who drop a 4.0–4.7L V8 into this platform and piece together cooling components from different sources end up with a system where the shroud doesn't fully seal to the radiator, the hoses are cut and spliced to fit, the fan controller activates too late, and the condenser was sourced without verifying clearance against the new radiator. The result is a cooling system that works in mild weather and fails on the first demanding trip.

This package is the answer to that problem. Every component is designed around the NWT radiator, which is designed around the 1989–1995 chassis with a UZ swap installed. The variable speed fan controller gives you actual thermal management instead of fixed-point switching. The pre-shaped hoses fit without modification. The condenser was sized with this exact radiator and chassis in mind. Nothing in this kit requires you to make it fit — because it was already designed to.

If you're doing a UZ swap and you want the cooling system done once and done right, this is the kit.