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Toyota 1GRFE 4.0L V6 Remanufactured Engine – 40759 - Image 1

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Toyota 1GRFE 4.0L V6 Remanufactured Engine – 40759

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Toyota 1GRFE 4.0L V6 Remanufactured Engine – 40759

Original price was: $7,549.00.Current price is: $6,049.00.

Displacement: 4.0L V6
Block Cast: 1GR
TRD Equipment Voids Warranty

Restore the legendary towing and off-road capability of your truck with a premium Toyota 1GRFE Remanufactured Engine. Built to strictly meet or exceed OEM specifications, this 4.0L DOHC 24-Valve V6 long block features a fully CNC-machined aluminum casting, 100% new internal wear components, and rigorous live-run SIM testing.

✔ Valvetrain: DOHC 24-Valve with All-Aluminum Block & Heads
✔ Quality Assurance: Hot SIM spun, pressurized, and compression verified
✔ Vehicle Application: 2005–2011 Tacoma, 4Runner, Tundra & FJ Cruiser

Categories: ENGINES, TOYOTA Tags: 1gr block cast, 1gr rh head cast, 1grfe engine, 1grfe long block, 4.0l v6 engine, automotive powertrain, dohc 24v, rebuilt toyota engine, Remanufactured Engine, toyota 1grfe, toyota 4.0l engine, toyota 4runner engine, toyota fj cruiser engine, toyota tacoma engine, toyota tundra engine, trd engine replacement

Description

Description

Heavy-Duty Toyota 1GRFE Remanufactured Engine

Known for powering a generation of iconic off-road and utility vehicles, the 4.0L V6 requires exact precision during the rebuilding process. Every Toyota 1GRFE Remanufactured Engine from Mechrontech delivers factory-grade quality, improved durability, and long-term reliability for your Tacoma, 4Runner, Tundra, or FJ Cruiser. By upgrading critical internal components and machining surfaces beyond factory limits, we resolve common high-mileage wear patterns. View our complete catalog of remanufactured engines for more fleet and B2B replacement powertrain solutions.

⚠️ Important Warranty Restriction

Use of TRD Equipment VOIDS Warranty: This engine is remanufactured strictly to naturally aspirated OEM specifications. The installation of forced induction systems, including TRD Superchargers or aftermarket performance tuners, alters factory cylinder pressures and operating temperatures, immediately voiding the up to 7-year / 1-million-mile warranty protection.

Engine Code

1GR-FE

Block Cast # 1GR

Displacement

4.0L (3956cc)

241.0 cu. in. / V6

Head & Valvetrain

DOHC 24-Valve

Head Cast # 1GR RH (Aluminum)

Shipping Weight

280 lbs

36 x 36 x 36 in.

Why Choose Our Toyota 1GRFE Remanufactured Engine?

Sourcing a salvage yard V6 means inheriting someone else’s skipped oil changes or stretched timing chains. A completely remanufactured long block resets the clock to zero hours. The stringent build protocol for each Toyota 1GRFE Remanufactured Engine includes:

1. Thermal Cleaning & Disassembly

The entire aluminum V6 block is fully disassembled and thermally cleaned in specialized ovens to safely lift away hardened oil varnish, carbon scale, and stubborn coolant residues.

2. Magnaflux Structural Inspection

Utilizing advanced magnetic particle and dye penetrant testing, the aluminum blocks and cylinder heads are scrutinized for microscopic stress fractures that could cause long-term failure under towing loads.

3. Precision CNC Surface Machining

All deck surfaces on the engine block and cylinder heads are CNC machined to exact micro-inch finishes, guaranteeing a perfectly flat, unyielding seal for the multi-layer head gaskets.

4. 100% Brand-New Wear Parts

Reassembled with all-new main bearings, pistons, rings, lifters, high-flow oil pump, Viton™ valve seals, freeze plugs, galley plugs, and a completely new timing chain assembly featuring upgraded tensioners.

Automated SIM Testing Protocol

Reliability is non-negotiable for a truck powertrain. Before securing the crate for freight transit, every Toyota 1GRFE Remanufactured Engine undergoes stringent SIM rig testing:

Fluid Pressure Validation: The cooling and lubrication systems are fully pressurized to test oil flow across all journals, confirming there are no blockages or internal leaks.
High-RPM Spin Testing: The crankshaft is spun dynamically by an electric motor to verify uniform compression across all six cylinders.
Valvetrain Integrity: The DOHC timing chain setup is monitored during the spin test to ensure zero slack and perfect valve seat sealing.

Vehicle Compatibility for the Toyota 1GRFE Remanufactured Engine

This 4.0L V6 (3956cc) DOHC long block assembly is a direct drop-in replacement for the following Toyota truck and SUV applications:

Year Range	Make	Model	Engine Details
2005 – 2006	Toyota	Tundra	V6 4.0L 3956cc
2005 – 2009	Toyota	4Runner	V6 4.0L 3956cc
2005 – 2011	Toyota	Tacoma	V6 4.0L 3956cc
2007 – 2009	Toyota	FJ Cruiser	V6 4.0L 3956cc

Installation & Initial Break-In Guidelines

To preserve the comprehensive warranty and ensure maximum lifespan for your new Toyota 1GRFE Remanufactured Engine, strict adherence to these installation practices is required:

Radiator & Cooling Flush: Completely flush or replace the radiator assembly. Debris from a previous head gasket failure will destroy the new engine if circulated.
Oil Priming: Fill the crankcase with high-quality conventional break-in oil and manually crank the engine with the ignition disabled to prime the oil galleries.
500-Mile Break-In Period: Drive at varying speeds and loads for the first 500 miles. Avoid towing, extended idling, or constant RPM highway cruising to allow the piston rings to seat against the newly cross-hatched cylinder walls.

Full Technical Attributes

OEM Manufacturer Code	1GR-FE (1GRFE)
Engine Code / Casting #	Block Cast # 1GR
Cylinder Head Casting #	Head Cast # 1GR RH (Left & Right)
Casting Location	Right Side Bell Housing
Engine Type & Valvetrain	4.0L V-Block V6 DOHC 24-Valve
Block & Head Material	Aluminum Block / Aluminum Heads
Main Bearing Cap Bolt Quantity	2-Bolt
Fuel Grade	Gasoline (Premium Recommended)
Dimensions & Weight	36″ x 36″ x 36″ \| 280 lbs

California Proposition 65 Notice: WARNING: This product can expose you to chemicals including chromium (hexavalent compounds), which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more details, visit www.P65Warnings.ca.gov.

Inquire About Freight Delivery & Pure Care™ Warranties

For questions regarding our industry-leading 7-year / 1-million-mile warranty options, core exchange procedures, or nationwide freight delivery when purchasing a Toyota 1GRFE Remanufactured Engine, reach out directly through the Mechrontech contact portal.

Toyota 1GRFE 4.0L V6 Remanufactured Engine – 40759