1UZ Swap Power Steering Package for Toyota Pickup 4Runner- High-Flow 1650 PSI System

Product Overview

Complete bolt-on power steering upgrade package engineered specifically for 1UZ-FE V8 engine swaps into 1979–1995 Toyota Pickup Trucks and 4Runners. This all-inclusive system solves the #1 hydraulic headache in 1UZ conversions. The factory Toyota power steering pump cannot supply the pressure and flow volume demanded by the 1UZ-FE's pump mounting geometry or any ram-assist/full hydraulic steering system. Our package pairs the Trail-Gear Power Flow™ 1650 PSI high-flow pump with our exclusive Northwest Toys adapter bracket, a purpose-built 6-rib serpentine pulley, a machined aluminum reservoir, a reservoir mounting bracket, and a front-mounted fluid cooler, giving you every component needed to go from empty engine bay to a fully functional, professional-grade power steering system without fabrication or guesswork.

The stock Toyota pump outputs only 1,300 PSI at 1 gallon per minute — barely enough for a factory steering box with stock tires, and completely inadequate once you add the 1UZ-FE, larger tires, or any form of hydraulic steering assistance. This package is the correct solution for 1UZ swap builds with standard recirculating-ball steering, ram-assist, or full hydraulic systems.

Key Features & Benefits

• Eliminates Pump Starvation at Idle: The Trail-Gear Power Flow™ delivers 1,650 PSI at 4.5 GPM — more than triple the flow volume of the stock Toyota pump (1,300 PSI at 1 GPM) — ensuring full steering authority even at a dead idle with large tires or hydraulic ram steering
• No Fabrication Required: The Northwest Toys exclusive adapter bracket mounts the TC-style Power Flow pump directly to the 1UZ-FE block with correct alignment and clearances — no welding, no drilling, no custom fabrication
• Fluid Cooling Included: The Trail-Gear 9" x 8" power steering cooler mounts in front of the radiator to keep fluid temperatures under control during sustained off-road use, the component most commonly omitted in DIY 1UZ builds, and the one most likely to cause pump failure without it
• Reservoir Matched to Pump Flow: The OEM Toyota reservoir is inadequate for high-flow TC-style pumps. The Trail-Gear machined aluminum reservoir is pressure-tested and uses #6 JIC (return) and #10 JIC (outlet) fittings correctly sized for the Power Flow pump's output volume
• Dedicated Reservoir Bracket: The Trail-Gear reservoir bracket with all hardware provides a secure, purpose-engineered mounting point for the aluminum reservoir in 1979–1995 Toyota Pickup and 4Runner engine bays
• Endurance-Rated Pump Construction: Steel pump body, heavy-duty heat-treated internals, large bushings, and an oversized shaft rated for high-HP engines with high radial side loads. Endurance tested at 400°F. Each unit is individually bench tested before shipping
• 6061-T6 Billet Pulley, Anodized Black: CNC-machined aluminum serpentine pulley fits the Power Flow pump's 0.665"–0.667" shaft and is compatible with both 5-rib and 6-rib serpentine belts
• Ram Assist & Full Hydro Ready: The Power Flow pump is the industry benchmark for hydraulic ram steering — maintaining consistent flow across all RPMs, never bypassing early, and providing the 4.5 GPM needed to feed both a steering box and a ram simultaneously
  
  

Technical Specifications

Package Type: Complete Power Steering System — 1UZ-FE V8 Swap
Pump Pressure Output: 1,650 PSI
Pump Flow Rate: 4.5 GPM at 2,000 RPM / 9.4 mL per revolution / 17.4 GPM max at 7,000 RPM
Maximum Pump RPM: 7,000 RPM (calculate correct pulley diameter before installation — see FAQ)
Pump Style: TC / CB direct replacement
Pump Body Material: Steel
Pump Testing: Endurance tested at 400°F; each unit individually bench tested
Pulley Material: 6061-T6 aluminum, anodized black
Pulley Diameter: 5.5" (140mm) — verify correct size for your engine RPM range using Trail-Gear's Pulley Diameter Calculation PDF
Pulley Shaft Fit: 0.665"–0.667" (fits Power Flow pump and most TC-style pumps)
Pulley Belt Compatibility: 5-rib or 6-rib serpentine belts
Reservoir Fittings: #6 JIC side input (return line), #10 JIC bottom outlet (to pump)
Reservoir Construction: Machined aluminum, pressure-tested, unpainted finish; mounting hardware included
Cooler Fin Area: 9" x 8"
Cooler Mounting: Hardware included; mounts in front of radiator on low-pressure return side
Fluid Requirement: Standard power steering fluid ONLY — ATF, semi-synthetic, and full synthetic fluids void the Trail-Gear pump warranty

What's Included in This Package

Fitment

Important: You must calculate the correct pulley diameter to ensure the Power Flow pump never exceeds its 7,000 RPM maximum. Use the Trail-Gear Power Flow Pump Pulley Diameter Calculation PDF or contact Northwest Toys tech support before finalizing your belt and pulley selection. This package does not include the high-pressure steering hose — the 1UZ-FE conversion high-pressure hose is available separately from Northwest Toys for both ABS-equipped and non-ABS chassis variants. Verify your ABS configuration before ordering that hose.

Frequently Asked Questions

Q: Why can't I use the factory Toyota power steering pump for my 1UZ-FE swap?
A: The stock Toyota power steering pump outputs only 1,300 PSI at approximately 1 gallon per minute — barely adequate for a stock steering box with factory tires. When a 1UZ-FE is installed and paired with larger tires or any hydraulic steering assistance, the factory pump cannot supply sufficient fluid volume, especially at low RPM. The result is heavy, unresponsive steering at idle and accelerated pump failure. The Trail-Gear Power Flow™ delivers 1,650 PSI at 4.5 GPM, providing full steering authority from idle through the entire RPM range regardless of tire size or steering configuration.

Q: Does this package support hydraulic ram-assist or full hydraulic steering?
A: Yes. The Trail-Gear Power Flow™ 1650 PSI pump is specifically engineered for hydraulic ram steering applications and is a direct replacement for TC and CB style pumps used in ram assist setups. It maintains consistent flow across all RPM ranges without early bypass — the two most critical performance characteristics for ram-assist and full-hydro systems. This package is the recommended foundation for serious off-road 1UZ builds running any form of hydraulic steering enhancement.

Q: What pulley diameter do I need for my 1UZ swap?
A: The 5.5" (140mm) 6-rib pulley included in this package is the standard selection for 1UZ-FE applications and keeps the pump within its safe operating range for typical street and trail use. However, every build has different engine RPM characteristics and belt routing geometry, so you must verify the correct diameter using the Trail-Gear Power Flow Pump Pulley Diameter Calculation PDF before installation. The Power Flow pump has an absolute maximum speed of 7,000 RPM — exceeding this will cause immediate pump damage and void the warranty.

Q: Does this package include the high-pressure steering hose?
A: No. The high-pressure power steering hose for the 1UZ-FE conversion is available separately from Northwest Toys in ABS-equipped and non-ABS chassis variants. The correct variant depends on whether your vehicle has Rear-Wheel ABS — identifiable by a brake/steering actuator on the right-hand frame rail just rearward of the radiator, connected to both steering and brake lines. Order the appropriate hose separately to complete your system plumbing.

Q: Can this package be used for a 2UZ-FE or 3UZ-FE swap?
A: The Power Flow pump, pulley, reservoir, reservoir bracket, and cooler are compatible with TC/CB-style pump installations across multiple engine platforms. However, the Northwest Toys adapter bracket is engineered specifically for the 1UZ-FE mounting geometry. For 2UZ-FE or 3UZ-FE applications, contact Northwest Toys tech support to confirm bracket fitment before ordering.

Related Parts You May Need

• 1UZ-FE High-Pressure Power Steering Hose — Available separately from Northwest Toys in ABS and Non-ABS chassis variants; required to connect the Power Flow pump to your factory Toyota steering gear
• Power Steering Pulley Puller/Installer Tool — Mandatory for pulley installation and any future removal; improvised installation methods immediately void the Trail-Gear pump warranty
• 1UZ Swap Steering Shaft Upgrade Kit — Replaces the OEM steering shaft with a compact, collapsible unit that clears 1UZ-FE headers and improves steering response with no cutting or welding required

Common Symptoms of Power Steering Problems in 1UZ-FE Swaps

• Heavy or unresponsive steering at idle or low RPM, especially with large tires or a steering ram installed
• Whining or groaning from the power steering pump under load — a sign the factory pump is cavitating from insufficient reservoir volume or flow rate
• Power steering fluid overheating or foaming in the reservoir after sustained slow-speed maneuvering or rock crawling without a fluid cooler
• Inconsistent steering assist across the RPM range — stock pumps bypass early and lose flow at low engine speeds, producing unpredictable steering behavior during technical off-road driving
• Premature pump failure in swapped vehicles — typically caused by running an undersized factory pump against the hydraulic demands of a larger displacement engine or ram steering system
• Pump mounting incompatibility between the 1UZ-FE block and factory Toyota TC-style pump brackets, resulting in belt misalignment or clearance conflicts without an engine-specific adapter bracket

Why Choose the Northwest Toys 1UZ-FE Complete Power Steering Package

The 1UZ-FE is one of the finest V8 engines ever transplanted into a classic Toyota platform. Smooth, powerful, and widely available from donor Land Cruisers and Lexus LS400 platforms, the 1UZ-FE fundamentally transforms a 1979–1995 Pickup or 4Runner into a formidable machine. But this swap creates real hydraulic engineering challenges. The 1UZ-FE does not share pump mounting geometry with Toyota's four-cylinder and six-cylinder TC-style pumps, and the factory Toyota pump is simply incapable of supplying the pressure and flow needed for a properly configured V8 build, particularly one running larger tires, a steering ram, or full hydraulic steering.

Northwest Toys has developed and refined this package over years of real-world 1UZ-swap experience. The exclusive NWT adapter bracket is the critical piece: it positions the Trail-Gear Power Flow pump correctly on the 1UZ-FE block, ensuring belt alignment, proper structural clearances, and secure mounting — without any welding, drilling, or custom fabrication on your part. The Power Flow pump delivers 1,650 PSI at 4.5 GPM with consistent flow from idle to redline, endurance tested at 400°F and individually bench tested before shipping. The machined aluminum reservoir is pressure-tested and correctly sized for a high-flow pump — the OEM Toyota reservoir will cavitate and accelerate pump failure when paired with a Power Flow unit. The Trail-Gear reservoir bracket provides secure, purpose-built mounting in Toyota 1979–1995 engine bays. And the 9" x 8" fluid cooler — the component most commonly omitted in DIY builds and the most common cause of avoidable pump failure in the Toyota swap community — is included in this package, so your system is fully protected from the first trial run.

Sourcing these six components individually, verifying cross-brand compatibility, and engineering the mounting geometry yourself costs significant time, money, and typically at least one failed attempt. This package eliminates all of that. Every component has been selected and validated for the 1UZ-FE swap into 1979–1995 Toyota Pickup and 4Runner chassis. Add the appropriate high-pressure hose (sold separately in ABS and non-ABS variants), verify your pulley diameter calculation, and build with complete confidence.