Product Overview

The head rotor, OEM number 22140-17810, is the distributive fuel injection pump head assembly fitted to the Toyota 1HZ 4.2L diesel engine, used across the Land Cruiser 70, 80, and Coaster platforms. This part is a Denso-pattern head rotor, a core internal component of the mechanical injection pump rather than a bolt-on external part, and remains in steady demand given how widely the 1HZ engine is used in fleet and commercial applications across the Middle East and Africa.

Worn units typically show up as hard starting, uneven idle, or a noticeable drop in fuel delivery precision across cylinders. GSK Auto manufactures this head rotor to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

096400-1500, 0964001500

(Confirm against your engine code and pump model before ordering - injection pump internals are precision-fit components, so verifying the exact pump variant matters more here than with most bolt-on parts.)

What Is an Injection Pump Head Rotor?

Function: The head rotor sits inside a distributive-type fuel injection pump and directs pressurized fuel to each cylinder's injector in the correct firing sequence. It's one of the core wear components inside the pump.

Working Principle: As the pump's drive shaft rotates, the head rotor's ports align sequentially with the pump housing's outlet ports, metering and directing fuel to each injector at the precise moment required for combustion timing.

Importance: On a mechanically injected diesel engine like the 1HZ, the head rotor directly governs fuel delivery accuracy and timing across all cylinders, so wear here affects starting, idle quality, and overall engine performance.

Common Failures & Signs: Wear on the rotor's sealing faces causing internal fuel leakage and reduced injection pressure. Hard or extended cranking before starting. Uneven idle or a rough-running engine. Reduced power output or increased fuel consumption over time.

Key Features

OEM-standard fitment - matches factory dimensional tolerances and rotor port geometry for the 22140-17810 application.

Precision manufacturing - machined to tight tolerance for accurate fuel metering.

Long service life - built to handle sustained duty-cycle use in commercial and fleet applications.

Excellent fitment - direct fit replacement for the Denso-pattern distributive pump.

Corrosion resistance - material finish resists fuel-related internal wear.

Reliable performance - consistent fuel delivery timing matching factory calibration.

Benefits

Importers - steady demand from a widely used diesel engine platform in fleet-heavy markets.

Wholesalers - reliable repeat-order item for workshops servicing 1HZ-equipped vehicles.

Repair Shops - OEM-spec fitment reduces comeback risk on pump rebuild jobs.

Distributors - private label packaging available for building a branded catalog.

Fleet Operators - restored fuel delivery accuracy supports consistent engine performance.

End Customers - improved starting, idle quality, and fuel efficiency.

Packaging & Shipping

Standard export packaging, sized for a precision internal engine component. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Frequently Asked Questions

• What does this head rotor do?

It directs pressurized fuel to each cylinder's injector in the correct sequence inside the distributive injection pump.

• Which engines use OEM 22140-17810?

Toyota 1HZ 4.2L diesel, used across Land Cruiser 70, 80, and Coaster platforms - confirm exact pump model before ordering.

• Can GSK Auto supply OEM-standard parts?

Yes, this head rotor is manufactured to match OEM specification for fitment and fuel delivery accuracy.

• What's the MOQ for wholesale orders?

MOQ varies by order type - contact us directly for current wholesale tiers.

• Do you export worldwide?

Yes, we ship to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

• Can you customize packaging?

Yes, OEM-style and private label printing are available.

• How do I know if my head rotor needs replacing?

Common signs include hard starting, uneven idle, and reduced power or fuel efficiency.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This head rotor is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing injection pump head rotors for the Toyota 1HZ diesel engine? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.