Oil Pump for Nissan Altima (2002-2006) 3.5L
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Precision Replacement Oil Pump for 2002-2006 Nissan Altima (L31)
What it Does: The replacement oil pump circulates pressurized motor oil throughout the 2002-2006 Altima's VQ35DE block to eliminate hydrodynamic friction, sustain journal bearing film strength, and prevent engine oil starvation under load.
The Stock Nissan Altima Oil Pressure Drop & Rotor Wear
Factory L31 platform VQ35DE oil pumps are prone to internal housing scoring, relief valve sticking, and gear cavity wear after prolonged thermal cycles. As clearances open up, the pump loses volumetric efficiency at warm idle, causing line pressure drops that starve variable timing sprockets, hydraulic tensioners, and rod bearings—eventually resulting in timing slap and fatal bottom-end rod knock.
The Engineering Solution
Engineered to exact OEM tolerances, this high-pressure replacement pump features precision-ground sintered metal trochoidal rotors encased in a rigid cast aluminum housing. This design stabilizes oil delivery across the entire RPM range, resisting cavitation and bypass blow-by. Shipped complete with a replacement pre-formed gasket and high-temp elastomer O-ring to prevent front timing cover leaks. Directly interchanges with factory part numbers EA-266-41964, OP3035, and 13510-31U10.
What's Included
- 1 Oil Pump Assembly
- 1 O-Ring
- 1 Gasket
Technical Specifications
| Fitment | 2002-2006 Nissan Altima |
|---|---|
| Engine / Chassis | VQ35DE / L31 |
| Stock Output | 240-250 hp / 246-249 lb-ft |
| Replaces OEM Part # | EA-266-41964, OP3035, 13510-31U10 |
Compatibility
- 2002-2006 Nissan Altima 3.5L V6 (VQ35DE)
Frequently Asked Questions & Fitment Warnings
Does this fit the L31 Altima?
Yes, this is a direct fit for the 2002-2006 Nissan Altima equipped with the VQ35DE 3.5L V6 engine. Does not fit 4-cylinder 2.5L QR25DE models.
Do I need to prime this oil pump before start-up?
Yes, pre-lube the pump cavity with clean engine oil prior to assembly and verify mechanical oil pressure immediately after initial startup.
The Nissan V6 Standard
Preserve the high-revving power and valvetrain response of your VQ-series V6 with reliable oil flow engineered to handle hard driving and daily demands alike.
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