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{"title":"ISUZU TFR 4JA1 4JB1 Vane-Type Hydraulic Power Steering Oil Pump with 7.0 L\/min","imgUrl":"https:\/\/img.chinax.com\/nimg\/37\/6f\/b749d3288edcadcf8cd11516808b-200x200-1\/isuzu_tfr_4ja1_4jb1_vane_type_hydraulic_power_steering_oil_pump_with_7_0_l_2fmin.jpg","attrs":{"Payment Terms":"T\/T","Model Number":"4JA1 4JB1","Net Weight":"Approx. 2.0 kg","Minimum Order Quantity":"20 PCS"}}
{"title":"ISUZU C240 VALVE ROCKER ARM 9126113490","imgUrl":"https:\/\/img.chinax.com\/nimg\/fc\/e5\/2d0d41fb7f3d502843fd768e1e28-200x200-1\/isuzu_c240_valve_rocker_arm_9126113490.jpg","attrs":{"Model Number":"C240","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU TFR68 69 ENGINE MOUNTING R 8970391890","imgUrl":"https:\/\/img.chinax.com\/nimg\/7b\/f1\/8998370f517b467e4c20c8df2ac9-200x200-1\/isuzu_tfr68_69_engine_mounting_r_8970391890.jpg","attrs":{"Model Number":"TFR68 69","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU TFR68 69 RUBBER ENG FOO L 5876101930 8970860761","imgUrl":"https:\/\/img.chinax.com\/nimg\/68\/26\/7c7f4c50909a3695c90b2db58900-200x200-1\/isuzu_tfr68_69_rubber_eng_foo_l_5876101930_8970860761.jpg","attrs":{"Model Number":"TFR68 69","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU DMAX 4JA1 T H1 GEAR TIMING 52 8979427551","imgUrl":"https:\/\/img.chinax.com\/nimg\/dc\/8f\/faca408a6e5c150d63ac2adb933f-200x200-1\/isuzu_dmax_4ja1_t_h1_gear_timing_52_8979427551.jpg","attrs":{"Model Number":"DMAX 4JA1 T H1","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU NHR 4JA1 DMAX CRANKSHAFT 8944552401","imgUrl":"https:\/\/img.chinax.com\/nimg\/e2\/3f\/ae38ad12211136e0e8ec331c8536-200x200-1\/isuzu_nhr_4ja1_dmax_crankshaft_8944552401.jpg","attrs":{"Brand Name":"YIMI","Supply Ability":"10000pcs\/month","Delivery Time":"15-20 days after deposit","Packaging Details":"1, neutral box , 2, color box, 3, customer brand package"}}
{"title":"ISUZU NKR KY 4JB1 CRANKSHAFT 8944436620 1005011BBA1","imgUrl":"https:\/\/img.chinax.com\/nimg\/ef\/20\/c9299ee3da59c593a2e0493b8470-200x200-1\/isuzu_nkr_ky_4jb1_crankshaft_8944436620_1005011bba1.jpg","attrs":{"Brand Name":"YIMI","Supply Ability":"10000pcs\/month","Delivery Time":"15-20 days after deposit","Packaging Details":"1, neutral box , 2, color box, 3, customer brand package"}}
ISUZU TFR 4JA1 4JB1 Power Steering Oil Pump 8-97129593-5 OEM Fit
Power Steering Oil Pump 8-97129593-5 8971295935 for ISUZU TFR TFS D-MAX 4JA1 4JB1 4ZD1 — Verified OEM Fit Hydraulic Steering Pump Assembly
Product Overview
This Power Steering Oil Pump with OEM numbers 8-97129593-5 and 8971295935 is a verified direct-fit replacement for ISUZU TFR / TFS / D-MAX / Pickup / Trooper / Rodeo / OPEL Frontera / Vauxhall Brava vehicles equipped with the 4JA1 / 4JB1 / 4ZD1 / 4ZE1 engines. This hydraulic steering pump is a critical component of the power steering system, responsible for generating hydraulic pressure that assists the driver in turning the steering wheel, ensuring smooth and effortless steering control under all driving conditions.
Working Principle
The power steering oil pump is a belt-driven hydraulic pump that draws power steering fluid from the reservoir and pressurizes it to the required operating pressure. The pressurized fluid is delivered to the steering gear box (or rack), where it assists the driver's steering input by applying hydraulic force to the steering mechanism. The 8-97129593-5 pump is a vane-type hydraulic pump with a precision-machined rotor and vanes that generate flow. The pump incorporates an internal pressure relief valve to prevent over-pressurization and a flow control valve to maintain consistent steering assist across the engine speed range.
Failure Symptoms
Heavy or stiff steering — insufficient hydraulic pressure from a worn pump makes steering difficult, especially at low speeds
Whining or groaning noise when steering — a worn pump bearing or internal damage produces noise during steering operation
Steering fluid leakage at the pump — visible fluid traces on the pump body, hoses, or under the vehicle indicate seal failure
Steering assist loss at idle or low RPM — a weak pump cannot maintain adequate pressure at low engine speeds
Steering vibration or pulsation — internal pump wear or air in the system causes steering wheel vibration
Fluid contamination with metal particles — internal pump wear produces metal debris that contaminates the steering fluid
Critical Inspection Note: ISUZU service manuals require that the power steering system be flushed and the fluid replaced whenever the pump is replaced. Always use the specified power steering fluid and bleed the system thoroughly to remove air. Inspect the drive belt for wear and correct tension.
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...