TOYOTA/LEXUS 7702005111 OIL PUMP
Product Specifications
Product quality
OEM Equivalent Grade
Wholesale price USD
$92.02
Wholesale price CNY
¥624
bolt MOQ (Minimal order)
20 pcs
local_shipping Production time
10-15 days
package_2 Shipping Weight:
—
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Application (cross references) 2
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| TOYOTA/LEXUS | 7702005111 |
| TOYOTA/LEXUS | 7702005110 |
Overview & Operating Principle
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The OIL PUMP is the engine lubrication oil pump — the positive-displacement pump driven directly from the crankshaft or camshaft that continuously draws oil from the sump through the pick-up tube and strainer and forces it under pressure through the main oil gallery to all lubricated engine components — crankshaft main bearings, connecting rod big-end bearings, camshaft journals, valve train, piston cooling jets, and variable valve timing phaser actuators — forming the pressurised oil film that prevents metal-to-metal contact at every bearing surface and removes heat from the piston crowns. The vast majority of modern passenger car oil pumps use a trochoidal (gerotor) design — an inner rotor with N lobes meshing with an outer rotor with N+1 lobes, both eccentric to the pump body, whose continuously changing mesh creates expanding and contracting chambers that draw and expel oil without the pulsing of gear-type pumps; the smooth flow characteristic of the gerotor pump produces low noise and consistent pressure with minimal gear rattle. A calibrated pressure relief valve — either integral to the pump body or separately mounted in the oil gallery — limits maximum oil pressure to typically 4–6 bar at operating temperature, preventing seal damage and excessive parasitic loss at high RPM. On modern variable-displacement oil pumps the eccentricity of the pump assembly is continuously adjusted by a solenoid-controlled vane actuator, matching pump output to the engine's actual lubrication demand and reducing the energy consumed driving a pump at full displacement when only partial flow is needed.
This unit — TOYOTA/LEXUS 7702005111 — is manufactured to OEM-equivalent specifications: rotor profile geometry and interference fit, pump body bore diameter and depth, pressure relief valve spring rate and opening pressure, drive gear or crankshaft nose engagement geometry, inlet and outlet port dimensions and positions, and maximum rated speed are matched to the original part. Supplied as a complete pump assembly ready for installation. Available wholesale from 92.02 USD, MOQ 20 pcs, production lead time 10-15 days.
Oil pumps fail through rotor-to-body clearance increase from wear — as the rotor lobes and body bore wear, internal leakage from the high-pressure to the low-pressure side increases and pump output pressure falls below the minimum required for adequate bearing film thickness; this wear is accelerated by abrasive particles circulating in oil that has not been changed at the correct interval. Variable displacement pumps additionally fail through solenoid valve stiction that prevents displacement adjustment, causing the engine to operate with either fixed-low or fixed-high oil pressure. A pump that produces correct oil pressure at idle but loses pressure at high RPM has a failed pressure relief valve — the spring has weakened and the valve opens prematurely, bypassing output flow back to the inlet before the full gallery pressure is achieved.
Symptoms & Diagnostics
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Oil pressure warning light at idle with confirmed correct oil level and new oil filter — warning disappears at higher RPM — pump output at low speed is insufficient from rotor wear; at higher RPM the pump's speed compensates partially for the internal leakage; confirm with an external mechanical gauge — a serviceable pump produces ≥1.0 bar at warm idle; a worn pump reads below 0.5 bar; this pattern of low idle pressure with partially recovered higher-RPM pressure is the characteristic signature of a worn pump rather than a pressure sensor fault.
Oil pressure warning light at all engine speeds — confirmed with a mechanical gauge showing below 0.5 bar at all RPM — severe pump wear or a seized pump; on interference engines this pressure level causes immediate bearing failure and requires immediate engine shutdown; do not attempt to run the engine at this oil pressure level even briefly to investigate further — the bearing damage from a few seconds of dry running can destroy a crankshaft that would otherwise require only a pump replacement.
Knocking noise from the lower engine that appears within seconds of a cold start and does not clear — the knock is rhythmic at crankshaft frequency — the oil pump is not building pressure quickly enough on cold start from wear or from a failed check valve that allows oil to drain back through the pump into the sump during shutdown; the bearings are running dry until pressure builds; this cold-start knock with immediate pressure buildup that eventually clears it is a strong indicator of pump wear or check valve failure.
Oil pressure that is correct at idle but falls at high RPM — confirmed on a mechanical gauge showing correct idle pressure that drops progressively as RPM increases — the pressure relief valve spring has fatigued and the valve is opening at below its rated pressure, diverting pump output back to the inlet before the gallery reaches operating pressure; the system appears normal at low speeds because gallery demand is low enough to satisfy the reduced pump output, but at high speed demand exceeds the prematurely opened relief valve's bypass point.
Variable displacement oil pump fault code with the ECU reporting oil pressure deviation from the target map — typically on modern turbocharged engines with active oil pressure management — the pump's displacement control solenoid has failed or the pump's internal vane actuator has seized; confirm by monitoring actual oil pressure versus the ECU's commanded pressure target on scan tool live data; a gap between commanded and actual pressure at multiple RPM points confirms pump control failure rather than a pressure sensor fault.
Oil pump drive gear noise — a high-pitched whining from the timing cover area at all engine speeds that changes with oil temperature — the pump's drive gear mesh has worn from oil starvation or abrasive contamination; the whine is higher frequency than bearing knock and does not change with load; confirm by stethoscope applied to the timing cover at the pump position; a worn pump drive gear also sheds metallic particles into the oil circuit that accelerate bearing wear throughout the engine.
Logistics & Customs
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International HS Code
8413.30
EAEU Customs Code (TN VED)
8413 30 200 0
Typical Net Weight
Country of Manufacture
China
Standard MOQ
20 pcs
Production Lead Time
10-15 days
Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.
Installation Tips
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- Flush the engine oil circuit with clean flushing oil before installing the new pump — a worn oil pump sheds iron particles from its rotors and body into the oil circuit; these particles circulate to every bearing surface in the engine and will immediately begin wearing the new pump's rotors if the contaminated oil is not removed; drain the old oil completely, fill with a dedicated engine flush compound, idle for 10 minutes, drain completely, and only then install the new pump and fill with fresh oil of the correct specification.
- Inspect the oil pump pick-up tube strainer for blockage before installing the new pump — a partially blocked strainer restricts the pump's inlet flow, causing cavitation that produces noise and insufficient outlet pressure regardless of the pump's condition; the strainer is accessible with the sump removed and should be cleaned or replaced simultaneously with the pump; a strainer that collapses inward from suction restriction has been starving the pump and may be the primary cause of its failure.
- Prime the new pump with fresh engine oil before installation — pack the pump's rotor cavity with clean engine oil of the correct specification before fitting it to the engine; an unpacked pump must draw oil from the dry sump pick-up line before it can build pressure, and the first few seconds of dry-running as the pick-up tube fills destroys the new pump's rotor surface at the same rate as the old pump's failure mode; priming ensures oil is present at the rotor faces from the first revolution.
- Torque all pump body bolts to OEM specification in the diagonal sequence specified in the service data — the pump body is typically pressed against the engine block with a face-seal or O-ring; uneven tightening distorts the pump body, altering the rotor-to-body clearance around the circumference and immediately reducing pump efficiency; typical pump body bolt torque is 8–15 Nm — always use a calibrated torque wrench rather than tightening by feel on the thin-section casting.
- On crankshaft-nose-driven pumps, verify the pump drive engagement geometry before completing installation — the pump's inner rotor drive slot must be correctly indexed to the crankshaft nose drive feature; a pump installed with incorrect index may appear engaged but produces no oil flow; slowly rotate the crankshaft by hand after pump installation and confirm the inner rotor rotates with it before the sump and timing cover are refitted.
- Install the new OIL PUMP (TOYOTA/LEXUS 7702005111), refit the sump with a new gasket, refill with the correct engine oil specification and quantity, prime the system by cranking without spark for 10 seconds until the oil pressure warning light extinguishes, start the engine and immediately confirm stable oil pressure on a mechanical gauge at idle and at 2,000 RPM, and check for oil leaks at the pump body and sump before returning the vehicle to service.
Tools: calibrated mechanical oil pressure gauge for post-installation pressure verification, engine flush compound for oil circuit cleaning, torque wrench (8–15 Nm for pump bolts), clean engine oil for pump priming, new sump gasket or RTV, new oil filter.
Frequently Asked Questions
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How can genuine oil pump failure be distinguished from an oil pressure sensor fault before the engine is disassembled?
Connect a calibrated mechanical oil pressure gauge to the oil gallery port — temporarily removing the existing pressure switch or sensor — and measure actual gallery pressure at idle and at 2,000 RPM with the engine at operating temperature. A serviceable pump on a well-maintained engine produces ≥1.0 bar at warm idle and ≥3.0 bar at 2,000 RPM; values significantly below these thresholds with correct oil level and a new oil filter confirm genuine low oil pressure from pump wear or bearing clearance increase. If the mechanical gauge reads within specification, the pressure switch or sender has failed and the pump is serviceable. Never diagnose low oil pressure from the warning light alone without verifying actual gallery pressure — a sensor fault that falsely indicates low pressure is far more common than actual pump failure, and engine disassembly for a non-existent pump fault is an expensive misdiagnosis. ok.parts supplies oil pumps at wholesale MOQ from 92.02 USD per unit.
What oil change interval is required to maximise oil pump service life, and what happens when intervals are extended?
The OEM oil change interval is the maximum permissible interval under normal operating conditions — not a conservative guideline that can be safely exceeded. Engine oil's anti-wear additive package — zinc dialkyldithiophosphate (ZDDP) and similar compounds — depletes progressively from the first operating hour; by the OEM interval end the anti-wear protection has been substantially consumed. The oil pump's trochoidal rotor surfaces operate in boundary lubrication during cold start and at the rotor-to-body clearance interfaces throughout operation — without adequate ZDDP protection, iron transfer from these surfaces occurs at every start cycle. Extended oil intervals are the primary cause of premature oil pump wear; engines maintained at the OEM interval with the correct grade routinely achieve oil pump service lives matching the engine's overhaul interval, while engines with consistently extended intervals show measurable pump clearance increase by 100,000 km.
How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?
OEM-equivalent units in this catalogue replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.
Is white-label or custom packaging available for wholesale orders?
Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.
Frequently Replaced Together
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| Part | Reason for Combined Replacement |
|---|---|
| Oil Pump Pick-Up Tube and Strainer OEM ref. varies by engine sump design | The pick-up tube and strainer are the oil pump's inlet components — a strainer that is partially blocked with sludge or debris starves the new pump in exactly the same way it starved the original, reproducing the low-pressure symptom from the first startup. The pick-up tube O-ring or gasket where it connects to the pump inlet must also be replaced — a leaking pick-up joint draws air rather than oil, causing the pump to cavitate and produce noise and insufficient pressure regardless of the pump's condition. Always replace the pick-up assembly simultaneously with the pump. |
| Engine Oil and Filter Grade and specification per OEM requirement | An oil pump replaced due to wear has been shedding iron particles into the oil circuit throughout its failure period. These particles will immediately begin wearing the new pump's rotors and all engine bearing surfaces if the contaminated oil is not replaced. A complete drain, flush, and refill with fresh oil and a new filter is mandatory at every oil pump replacement — this is not an optional service item but a prerequisite for the new pump achieving its designed service life. |
| Main and Connecting Rod Bearing Shells Standard or undersize — measured before ordering | A worn oil pump that has been operating below minimum pressure for an extended period has been providing inadequate bearing film thickness at every bearing surface. If low oil pressure was present for more than a few thousand kilometres before the pump failed, inspect the main and connecting rod bearing clearances with Plastigage during pump replacement access; bearing clearances above the OEM maximum indicate that bearing replacement is required alongside the pump to restore a complete lubrication system with both adequate pressure and adequate bearing geometry. |