Crown Wheel And Pinion Gear 41201-09340 For TOYOTA Hilux KUN15 KUN25 KUN26 GGN15 GGN25 Prado 120 4Runner 2005-2007 — Saihuang OEM Direct Fit, 11x43 Ratio 3.909, 100% Professional Tested

The Crown Wheel and Pinion Gear with OEM number 41201-09340 is a verified direct-fit replacement for TOYOTA Hilux Vigo (KUN15, KUN25, KUN26, GGN15, GGN25), Land Cruiser Prado 120, and 4Runner models from 2005 to 2015. Manufactured by Saihuang (赛煌), this differential ring and pinion set is a critical drivetrain component responsible for transferring torque from the driveshaft to the rear wheels while providing the correct final drive ratio for optimal acceleration, fuel efficiency, and towing capability.

This crown wheel and pinion gear set features a 3.909 gear ratio (11 × 43 teeth) and is precision-machined from 20CrMnTi alloy steel with a black surface finish, ensuring exceptional strength, wear resistance, and durability for both on-road and off-road commercial applications. Saihuang is a Guangzhou-based manufacturer and exporter of Toyota, Nissan, and Mitsubishi auto parts with over 9 years of platform experience in the global aftermarket.

• Gear Ratio Verified: 3.909 (11 × 43 teeth) — pinion 11 teeth × crown wheel 43 teeth. Confirmed by Euro4x4parts (Ref. PCC1443) and Toyota parts catalog (FGR = 43:11 = 3.909).
• Material & Construction Verified: Manufactured from 20CrMnTi alloy steel with black (发黑) surface treatment — providing high hardness, excellent wear resistance, and superior load-carrying capacity for diesel and gasoline pickup applications.
• Spline Verified: 27T/29T spline configuration — matched to OEM pinion spline for correct connection to the propeller shaft companion flange.
• Diff-Lock Compatible: Fits axles equipped with Toyota differential locker and limited-slip differential — confirmed by Euro4x4parts application data.
• 100% Professional Tested: Each unit undergoes professional quality testing to ensure dimensional accuracy, gear tooth contact pattern, and rotational performance.
• OEM Cross-Reference Verified: Replaces 41201-09340, 41201-80177, 41201-80100, 41201-80723. International brand cross-references include PCC1443 (Euro4x4parts).

• Whining or howling noise from rear axle: The most common symptom of worn or improperly meshed ring and pinion gears — noise typically increases with vehicle speed and may change pitch during acceleration or deceleration.
• Clunking during acceleration/deceleration: Excessive gear backlash causing impact noise when torque direction changes — indicates gear tooth wear or bearing failure.
• Vibration at highway speeds: Worn pinion bearings or damaged gear teeth causing drivetrain vibration felt through the floor or steering wheel.
• Metal particles in differential fluid: Visible metal shavings or glitter during fluid change — indicates gear tooth surface degradation or bearing failure.
• Differential fluid leak at pinion seal: Worn pinion seal caused by excessive pinion shaft play — may lead to fluid loss and catastrophic differential failure if ignored.

Confirmed Fitment Sources: Euro4x4parts confirms fitment for Hilux 2.5 D4D diesel KUN60 (2005–2016), 3.0 D4D diesel KUN51 (2005–2015), 2.5 D4D KUN35 (2004–2012), 2.5 D4D KUN25 (2005–2011), and 3.0 D4D KUN26 (2004–2011).

• ⚠️ Verify Gear Ratio Before Ordering: This crown wheel and pinion set has a 3.909 ratio (11 × 43). Some Hilux models (particularly 4.0L V6 GGN variants) may use a 3.583 ratio (12 × 43) instead. Always confirm the correct ratio for your specific vehicle by checking the axle code plate (located on the firewall or door jamb) or by counting the original gear teeth.
• ⚠️ Compatibility with Diff-Lock: This gear set fits axles equipped with Toyota differential locker. Confirm your vehicle's differential configuration before ordering.
• ⚠️ Pinion Spline Count: This gear set uses a 27T/29T spline configuration. Verify the spline count on your existing pinion shaft before ordering, as some variants may differ.
• VIN Verification Recommended: Different production batches and market specifications may vary. Providing your VIN (vehicle identification number) at the time of inquiry ensures accurate fitment.
• Installation Requires Expertise: Crown wheel and pinion installation requires specialized tools for setting backlash, pinion depth, and bearing preload. Professional installation is strongly recommended.
• Shims and Hardware Not Included: This gear set is supplied as crown wheel and pinion only. New pinion bearings, side bearings, shims, and crush sleeve should be ordered separately for complete installation.
• Always verify OEM number against the vehicle documentation or axle code plate before ordering.

Manufacturing conforms to ISO9001 quality management system standards. Each unit undergoes 100% professional testing before packaging.

1. Verify fitment: Confirm gear ratio (3.909:1), tooth count (11×43), and spline count (27T/29T) against the removed OEM gear set. Verify the axle code plate for correct ratio.
2. Remove differential carrier: Drain differential fluid, remove driveshaft, disconnect axle shafts, and extract the differential carrier assembly from the axle housing.
3. Remove old ring and pinion: Unbolt the crown wheel from the differential case. Remove the pinion shaft, bearings, and old crush sleeve.
4. Clean and inspect: Thoroughly clean the axle housing and differential case. Inspect bearings, side gears, spider gears, and axle shafts for wear — replace as necessary.
5. Install new pinion: Install new pinion bearings (recommended), set pinion depth using shims, and establish correct pinion bearing preload with a new crush sleeve.
6. Install new crown wheel: Bolt the new crown wheel to the differential case. Apply thread locker and torque bolts to OEM specification.
7. Set backlash: Adjust ring gear backlash using side shims to 0.13–0.20 mm (0.005–0.008 in) — always confirm against the specific vehicle workshop manual.
8. Check tooth contact pattern: Apply marking compound to gear teeth, rotate through several revolutions, and verify contact pattern is centered and correct.
9. Reinstall carrier: Reinstall the differential carrier assembly into the axle housing. Reconnect axle shafts and driveshaft.
10. Fill with fluid: Fill with Toyota-approved differential fluid (typically 75W-90 GL-5 for applications or 80W-90 GL-5 for standard). Quantity varies by axle type.
11. Road test: Drive at varying speeds, listen for abnormal noise, and re-check fluid level. Some gear whine during initial break-in is normal but should diminish within 500 km.

• Inspect differential fluid level at every 20,000 km or annually.
• Replace differential fluid every 40,000–60,000 km or according to Toyota service interval.
• Use only Toyota-approved differential fluid — incorrect fluid can cause clutch chatter or premature gear wear.
• Monitor for abnormal noise — early detection of gear whine or clunking prevents catastrophic differential failure.

• Standard packing: Neutral packaging / corrugated carton with anti-rust paper; wooden pallet available for bulk orders.
• Package contents: 1 × Crown Wheel + 1 × Pinion Gear (shims and installation hardware not included).
• Suitable for: Differential repair shops, transmission specialists, fleet maintenance departments, spare parts distributors, and export wholesalers.
• Related parts available: Pinion bearings, side bearings, shims, crush sleeve, differential fluid, and complete differential rebuild kits.