Toyota FJ Cruiser GSJ15R 2011-2016 4.0L V6 1GR-FE Pacemaker Headers PH12675

Pacemaker PH12675 exhaust headers (extractors) are designed for Australian Toyota FJ Cruiser GSJ15R models from 2011 to 2016 fitted with the 4.0L V6 1GR-FE Dual VVT-i petrol engine.

Featuring mandrel-bent 41mm (1⅝") primary pipes with 63mm (2½") outlets, PH12675 replaces the restrictive factory exhaust manifolds and is designed to improve exhaust gas flow and scavenging for better torque, throttle response and engine performance.

The Australian-delivered FJ Cruiser uses the 5-speed automatic transmission and 4WD drivetrain. PH12675 provides for power steering, factory air conditioning and oxygen sensors.

Please check availability and current lead time before ordering.

Key Features

• Designed for the Toyota FJ Cruiser GSJ15R 2011-2016
• Suits the 4.0L V6 1GR-FE Dual VVT-i petrol engine
• Mandrel-bent 41mm (1⅝") primary pipes
• Large 63mm (2½") outlets
• Designed to improve exhaust gas flow and scavenging
• Suitable for power steering
• Suitable for factory air conditioning
• Oxygen sensor provisions
• Thick machined flanges for durability and reliable sealing
• Australian manufactured by Pacemaker

Construction

• High-quality steel tubing for strength and durability
• Mandrel-bent pipework for consistent exhaust gas flow
• Quality welded construction
• Thick machined flanges
• Pacemaker Blue heat-resistant finish

Additional Options

• PHC80 Ceramic Coating: Optional ceramic coating for improved heat management, surface durability and corrosion resistance
• PHFG12675: Replacement exhaust manifold/header gasket available separately
• Matching performance exhaust systems may be available separately – contact Best Mufflers for advice

Vehicle Fitment

• Make: Toyota
• Model: FJ Cruiser
• Series: GSJ15R
• Australian Model Years: 2011-2016
• Engine: 1GR-FE
• Capacity: 4.0L / 3956cc
• Configuration: V6 DOHC Dual VVT-i Petrol
• Transmission: 5-Speed Automatic
• Drivetrain: 4WD

Header Specifications

• Part Number: PH12675
• Primary Pipe Size: 41mm (1⅝")
• Outlet Size: 63mm (2½")
• Power Steering: Yes
• Air Conditioning: Yes
• Oxygen Sensor Provision: Yes
• EGR: N/A
• Recommended Gasket: PHFG12675
• Pacemaker Fitting Time: Approximately 3 hours

Fitment Notes

• Designed for Australian-delivered Toyota FJ Cruiser GSJ15R 2011-2016 models fitted with the 4.0L V6 1GR-FE engine
• Australian-delivered models use the 5-speed automatic transmission
• Suitable for factory power steering and air conditioning
• Oxygen sensor provisions are incorporated into the application
• Overseas-market FJ Cruiser specifications may differ; please contact us before ordering for a vehicle originally sold outside Australia
• Protect the Pacemaker Blue or optional ceramic-coated surfaces during trial fitting and installation
• Check clearance around steering, engine mounts, wiring and surrounding components during installation
• Please check availability and current lead time before ordering.

What’s Included

• Pacemaker PH12675 left and right header assemblies

Recommended With

• PHFG12675 replacement exhaust manifold/header gasket where required
• Matching performance exhaust system where further exhaust flow improvement is required
• PHC80 ceramic coating where additional heat management is desired

Why Good Headers & Exhaust Systems Matter

At 4,000 rpm, the 3956cc Toyota 1GR-FE V6 theoretically draws in approximately 7,912 litres of intake air per minute and can expel around 23,736 litres of hot exhaust gas per minute at approximately 600°C.

A well-designed header and exhaust system helps manage this high gas flow efficiently, reducing restriction and improving exhaust scavenging, torque, throttle response and engine performance.

Installation Tips

• Apply penetrating lubricant to exhaust manifold studs, nuts and exhaust connections before removal
• Inspect the cylinder-head sealing surfaces and remove all traces of the original gasket material
• Use new PHFG12675 gaskets where replacement is required
• Trial-fit both headers and check all clearances before fully tightening the mounting hardware
• Check oxygen sensor positioning and wiring during installation
• Protect the Pacemaker Blue or optional ceramic-coated surfaces during installation
• Check all exhaust connections for leaks after installation
• Inspect and re-tighten the header mounting hardware after the initial heat cycles

Warranty & Compliance

Pacemaker PH12675 headers are covered by the applicable Pacemaker manufacturer warranty, subject to Pacemaker's current warranty terms and conditions.

The completed installation must retain all required catalytic converters, oxygen sensors and emissions-control equipment and comply with applicable state or territory emissions, roadworthiness and registration requirements.

FAQ

Which FJ Cruiser models do PH12675 headers fit?
PH12675 is designed for Australian Toyota FJ Cruiser GSJ15R models from 2011 to 2016 fitted with the 4.0L V6 1GR-FE Dual VVT-i petrol engine.

What size are the PH12675 header pipes?
Current Pacemaker specifications list 41mm (1⅝") primary pipes with 63mm (2½") outlets.

Which gasket suits PH12675?
Pacemaker specifies PHFG12675 for this application.

Do PH12675 headers suit factory air conditioning and power steering?
Yes. Pacemaker lists PH12675 as suitable for vehicles with factory air conditioning and power steering.

Do PH12675 headers have oxygen sensor provisions?
Yes. Pacemaker specifies oxygen sensor provision for PH12675.

How long does installation take?
Pacemaker lists an approximate fitting time of 3 hours. Actual installation time can vary depending on vehicle condition and existing exhaust modifications.

Will PH12675 fit an overseas-market FJ Cruiser?
Overseas-market specifications can differ from Australian GSJ15R models. Please contact us with your vehicle details before ordering.

Can PH12675 headers be ceramic coated?
Yes. PHC80 ceramic coating is available as an optional upgrade. Please contact us for current pricing and lead time.

Can I pick up from the store?
Yes. Pick up is available but must be pre-arranged before collection.

How much is freight?
Freight varies depending on your delivery location and where stock is available. Please contact us for freight charges before ordering. Where possible, we can arrange dispatch from the nearest available product location to help reduce freight costs and delivery times.

Do you ship to the USA?
Yes. Best Mufflers regularly ships exhaust systems and exhaust parts to customers throughout the United States.

Please note that import duties, tariffs, taxes, and customs clearance fees are not included in the product or shipping price. Once your order is processed and the applicable charges are calculated, we will send you a secure payment link to finalise the import duties and tariff charges before dispatch.

Customer Support

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