Howo Differential Parts

Premium-quality Howo Differential Parts engineered for extreme durability. Trusted by fleets worldwide — experience zero compromise with certified Sinotruk HOWO components. Your journey to unmatched performance starts here.

Howo Differential Parts

Your truck’s differential transfers power from the driveshaft to the wheels while allowing them to rotate at different speeds. Genuine howo differential parts ensure smooth cornering, reduce tire wear, and handle extreme torque. As part of our premium Howo truck parts range, we stock complete differential assemblies, crown wheels, pinions, spider gears, and bearing kits for all popular axles. Whether you need a howo differential for an AC16 or howo truck differential for a MCY13 axle, our components are heat‑treated and precision‑ground for long life.

A failing howo differential causes whining noises, vibration, and eventual lock‑up. Our replacement parts restore full axle performance, keeping your fleet moving. From spider gears to complete third members, we have what you need.

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Key Functions & Advantages of Genuine Howo Differential Parts

Smooth Cornering

Allows outer wheel to rotate faster than inner wheel, reducing tire scrubbing and improving handling.

High Torque Capacity

Our howo differential components are forged from 20CrMnTi steel, carburized and hardened to HRC 58‑62, handling up to 20,000 Nm input.

Extended Service Life

Precision lapped gears and heavy‑duty taper roller bearings give up to 500,000 km life under normal loads.

Interchangeable Fitment

Our howo truck differential parts fit AC16, HC16, MCY13, ST16, and other popular axles. Direct OEM replacement.

Bestselling Howo Differential Parts – Fast Movers

Differential Assembly AZ9981320136

Differential Assembly AZ9981320136

Complete diff unit, OEM spec

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Planetary Gear Kit

Planetary Gear Kit

For wheel hub reduction, 5‑piece set

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Pneumatic Diff‑Lock Kit

Pneumatic Diff‑Lock Kit

Engages on‑demand, includes switch

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Ring & Pinion Set

Ring & Pinion Set

For AC16 axle, ratio 4.875

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Technical Reference – Common Howo Differential Configurations

Axle ModelApplicationDifferential Assy Part NumberGear Ratio
AC16371HP 6×4, heavy haulAZ92313202734.875
HC16Military 6×6, miningAZ99813203265.73
MCY13T7H 540HP, Euro 6812-35105-01933.73
ST16Old model 336HPWG92313200234.44

Compatible Howo Truck Models

Howo 371 / 420 (AC16 axle)

Our howo differential parts directly fit 6×4 and 8×4 dump trucks, tractors. Use AZ9231320273 crown wheel and pinion set with ratio 4.875.

Howo T7H / Sitrak C7H (MCY13 axle)

Euro 5/6 trucks need the 3.73 ratio differential (812-35105-0193). Our howo truck differential components maintain smooth highway cruise.

Why Choose Our Howo Differential Parts?

OEM Grade Metallurgy
All gears forged and heat‑treated to original Sinotruk specifications – no soft aftermarket junk.
Lapping & Matching
Each crown wheel and pinion is matched and lapped for silent operation and long life.
Global Stock
Warehouses in Shanghai, Dubai, Houston – fast delivery for emergency repairs.
Technical Support
Our axle experts help with backlash adjustment, preload specs, and part identification.
Fleet Bulk Pricing
Discounts for 5+ axle overhaul kits. Ask for a quote.
12‑Month Warranty
Free replacement for gear tooth fracture or bearing failure.

Real Customer Experiences

“The crown wheel and pinion set for my AC16 axle was a perfect match. Quiet operation and no more whining noise. Thanks for fast shipping to Peru.”

– Diego, Fleet Mechanic, Peru

“Bought a complete howo differential carrier for my T7H. Bolted right in. The truck pulls smoothly and fuel economy improved 5%.”

– Ahmed, Owner‑Operator, UAE

“We rebuilt 8 axles using Howo differential parts. The spider gears and bearings are high quality. Will order again.”

– Suresh, Workshop Owner, India

“The MCY13 diff kit arrived with all shims and a clear adjustment guide. Saved me hours. Great support team.”

– Viktor, Fleet Supervisor, Russia

FAQs – Howo Differential Parts

1. What are the signs of a failing howo differential?
Whining or howling noise on acceleration/deceleration, vibration, leaks around pinion seal, or metal particles in oil.
2. Can I replace only the crown wheel and pinion without changing bearings?
We strongly recommend replacing bearings and seals at the same time – our full kit includes everything.
3. What oil grade should be used in Howo axles?
GL‑5 85W‑140 for normal conditions; for extreme cold, use 75W‑90. Capacity approx. 12–15L per axle.
4. How to set backlash and preload correctly?
We provide a detailed adjustment guide with every crown wheel/pinion set. Use a dial indicator (0.25–0.35mm backlash).
5. Are your parts compatible with inter‑axle differential lock?
Yes, our differential parts work with standard and locking differentials. Specify locker version when ordering.
6. What is the typical delivery time for a full diff assembly?
In‑stock assemblies ship within 48h. Build‑to‑order takes 10‑15 days.
7. Can I get a lower ratio for better highway fuel economy?
Yes, we stock ratios from 3.08 to 6.17 for various axles. Contact us with your desired RPM and tire size.

Troubleshooting Howo Truck Differential Issues

Constant high‑pitched whine
→ Worn pinion bearing or incorrect gear mesh. Check backlash and replace bearings.
Clunk when shifting from reverse to drive
→ Excessive ring gear backlash or worn spider gears. Rebuild differential with new parts.
Oil leak from pinion seal
→ Worn seal or loose pinion nut. Replace seal and check crush sleeve preload.
Vibration under load
→ Bent axle housing or worn side bearings. Inspect housing; replace bearings if needed.

Quick Resource Hub

Catalog PDF

Install Videos

Ratio Calculator

Genuine Check

Keep Your Drivetrain Reliable with Premium Howo Differential Parts – The differential is often neglected until failure. A properly functioning howo differential ensures even power distribution, reduces tire wear, and prevents axle lock‑up. Our components are manufactured using vacuum‑degassed steel and CNC‑hobbed to AGMA Class 10 quality. Each howo truck differential kit includes pre‑matched crown wheel and pinion, taper bearings, crush sleeve, shims, and a new pinion seal. For heavy‑duty applications (mining, logging), we recommend upgrading to a limited‑slip or locking differential.

We also stock complete differential carriers – just bolt in and go. For fleets, we offer axle rebuild packages with everything needed for one side or both. Save time and money by ordering a full master overhaul kit. All parts come with detailed torque specs and adjustment instructions. Our technical team can also guide you through the differential setup process via remote video call. With stock in three continents, most orders arrive within a week. Choose genuine howo differential components – the backbone of your truck’s drivetrain.

Need a custom ratio for special terrain? Contact our engineers. We can supply any gear ratio from 2.93 to 7.17 for AC16, MCY13, and ST16 axles. Genuine howo differential parts – reliability you can count on.

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