Oil Pump for Infiniti FX35 (2003-2008) 3.5L

High-Flow Replacement Oil Pump Kit for 2003-2008 Infiniti FX35 (S50)

What it Does: The replacement oil pump restores critical lubrication pressure and oil volume across the internal journals on the 2003-2008 FX35 to prevent hydrodynamic bearing failure and engine seizure.

The Stock Infiniti FX35 Oil Pressure & Lubrication Breakdown

On high-mileage VQ35DE engines, factory oil pumps suffer from internal gerotor gear scoring, front main journal seal degradation, and pressure relief valve sticking due to severe thermal cycling. As mechanical clearances widen between the inner/outer rotors and the housing, the factory unit fails to sustain hydraulic pressure at hot idle. This leads to starvation across the cylinder heads, cam phase lag, timing chain tensioner slack, and accelerated rod bearing degradation inside the S50 chassis engine bay.

The Engineering Solution

Manufactured to strict OE volumetric standards, this replacement oil pump features precision-machined internal gears housed within a high-integrity, pressure-tested aluminum casing. Tight gear-to-body tolerances eliminate cavitation and pressure loss under sustained operating loads, ensuring constant oil delivery to the variable valve timing galleries. Direct-fit replacement for OEM part numbers EA-266-41964, OP3035, and 13510-31U10, supplied with a brand-new O-ring and gasket to guarantee leak-free front timing cover reassembly.

What's Included

• 1 Oil Pump
• 1 O-Ring
• 1 Gasket

Technical Specifications

Compatibility

• Infiniti FX35 3.5L V6 VQ35DE (2003-2008)

Frequently Asked Questions & Fitment Warnings

Does this fit the S50 FX35?

Yes, this is a direct fit for the 2003-2008 Infiniti FX35 equipped with the VQ35DE engine.

Do I need to prime the oil pump before initial startup?

Yes, pre-priming the pump cavity with clean engine oil prior to timing cover installation is required to establish rapid hydraulic pickup and prevent dry pump cavitation.

The Infiniti Performance Caliber

Engineered to handle the high-revving demands of the Japanese VQ platform, this oil pump delivers constant hydraulic integrity, stabilizing vital oil pressure across both street cruising and aggressive track-style driving.