AZ9231320266 Differential Assembly for Sinotruk HOWO Truck
AZ9231320266 Differential Assembly For Sinotruk HOWO heavy truck drive axle. Match part number AZ9231320266 before ordering; wholesale supply with volume.
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Product Specifications
Product Details
This differential is supplied under the Vidishi Auto brand for wholesale and workshop supply.
It is produced for Sinotruk (China National Heavy Duty Truck Group) – HOWO series applications.
Body material is Steel – cast/forged steel differential case with heat-treated alloy steel gears, cross shaft and bearings.
It is supplied as a compatible replacement for Sinotruk references, not as a genuine Sinotruk-branded part.
Catalogue descriptions that mention differential fluid normally refer to the same driveline family documented here.
The notes above summarise what buyers typically need to know about differential gear oil before ordering.
This unit is frequently shortlisted by parts departments researching differential front.
The notes above summarise what buyers typically need to know about differential in car before ordering.
The notes above summarise what buyers typically need to know about auto parts differential before ordering.
The notes above summarise what buyers typically need to know about auto differential parts before ordering.
Catalogue descriptions that mention aftermarket locking rear differential normally refer to the same driveline family documented here.
Shopping notes: differential repair cost searches end well when the casting references and flange pattern are checked before checkout.
Our sales desk answers differential assembly price questions daily and quotes by WhatsApp with lead time and freight included.
| Product type | Differential |
| Part number | AZ9231320266 |
| Condition | New |
| Warranty | 12 Months |
| Minimum order | 30 sets |
| Make | Sinotruk (China National Heavy Duty Truck Group) – HOWO series |
| Fitting position | Rear drive axle, middle (inter-axle) drive axle differential carrier |
| Material | Steel – cast/forged steel differential case with heat-treated alloy steel gears, cross shaft and bearings |
| Published specification | No ratio or tooth count is confirmed for AZ9231320266. Verified host-axle data for Sinotruk HOWO drive axles: ST16 (pressed housing, hub-reduction) 3.93, 4.42, 4.80, 5.73, 6.304, 6.72, 9.49, 10.77; HC16 (cast housing, hub-reduction, 2 x 16,000 kg) 3.93, 4.42, 4.80, 5.73, 6.72, 9.49; AC16 4.77, 5.45, 6.5; MCY13 single-reduction 2.85, 3.08, 3.36, 3.7, 4.11, 4.63, 5.29; HW16 3.73, 4.22; HW12 3.91, 4.875, 5.833 |
| Country of origin | Shandong, China |
| Packaged shipping weight | Not published for this part number |
| Carton dimensions | Not published for this part number |
Supplied brand: Vidishi Auto — not Sinotruk-branded, not a genuine Sinotruk part. Reference design: Sinotruk (reference only).
Fitment verification
Fitment verification takes three steps: match the reference number on the old unit, read the engine code plate, and compare the flange pattern and overall length before checkout. Match the casting number stamped on the old unit with the photo before you confirm the order.
Reference and OE numbers
- AZ9231320266
Cross references
- AZ9231320266Z – differential assembly (reinforced), assembled from matched components (same dealer price lists)
- AZ9231320274 – the matching differential unit listed in the Sinotruk HC16 rear driving axle parts catalogue
Match the exact number stamped or labelled on the original part before ordering. Where one part carries more than one reference number, every variant is shown above.
Part number identification
- The number used on this page is AZ9231320266.
- Numbers are often written in grouped form on the part or label, for example AZ9231320266.
- Where one part carries more than one reference number, every variant is shown above so the same physical part can be matched across catalogues.
Technical specification
| Item | Value | Status |
|---|---|---|
| Product type | Differential | Confirmed |
| Condition | New | Confirmed |
| Warranty | 12 Months | Confirmed |
| Material | Steel – cast/forged steel differential case with heat-treated alloy steel gears, cross shaft and bearings | Reference |
| Published specification | No ratio or tooth count is confirmed for AZ9231320266. Verified host-axle data for Sinotruk HOWO drive axles: ST16 (pressed housing, hub-reduction) 3.93, 4.42, 4.80, 5.73, 6.304, 6.72, 9.49, 10.77; HC16 (cast housing, hub-reduction, 2 x 16,000 kg) 3.93, 4.42, 4.80, 5.73, 6.72, 9.49; AC16 4.77, 5.45, 6.5; MCY13 single-reduction 2.85, 3.08, 3.36, 3.7, 4.11, 4.63, 5.29; HW16 3.73, 4.22; HW12 3.91, 4.875, 5.833 | Reference |
| Packaged shipping weight | Not published | Not published |
| Carton dimensions | Not published | Not published |
How we label data: Confirmed means the value comes from the product or order record; Reference means it is taken from a supplier catalogue and should be checked against the original part; Not published means no figure is released for this part number and no generic value is substituted.
For differential assembly diagram, the tabulated dimensions and the labelled data tiers are the authoritative figures for this unit.
Product features
- Supplied under the Vidishi Auto brand with a 12 Months warranty against manufacturing defects.
- Steel – cast/forged steel differential case with heat-treated alloy steel gears, cross shaft and bearings construction for service in Driveline duty.
- Built as a compatible replacement for Sinotruk references, supplied as an independent part and not as a Sinotruk-branded product.
- Wholesale packing with a minimum order of 30 sets.
- Each unit is checked against the numbers listed above before dispatch.
Catalogue descriptions that mention differential gear normally refer to the same driveline family documented here.
This unit is frequently shortlisted by parts departments researching differential fluid pump.
This unit is frequently shortlisted by parts departments researching differential fluid service.
This unit is frequently shortlisted by parts departments researching differential car part.
This unit is frequently shortlisted by parts departments researching aftermarket rear differential cover.
The notes above summarise what buyers typically need to know about aftermarket limited slip differential before ordering.
This unit is frequently shortlisted by parts departments researching differential assembly stand.
A careful differential fluid change job starts with disconnecting the battery and supporting the exhaust, then unbolting the flanges.
Renewing the hardware around differential side bearing spacer at the same time as the main assembly avoids a second teardown later.
Renewing the hardware around differential pinion seal at the same time as the main assembly avoids a second teardown later.
Inspect the neighbouring differential assembly kits hardware for wear while the assembly is on the bench.
Reference notes for differential assembly differential parts diagram stay within the measured, source-labelled values published on this page.
What is included
Reference AZ9231320266 suits For Sinotruk HOWO heavy truck drive axle at the Rear drive axle, middle (inter-axle) drive axle differential carrier. Order AZ9231320266 and the numbers listed above travel on the same packing list, so one carton covers one reference.
Wear and fault symptoms
- Gear tooth wear, pitting and spalling on the ring gear, pinion, planet (planetary) gears and side gears after prolonged high-load service – produces a regular knocking/clicking or continuous metallic friction noise
- Differential bearing wear, spalling – high-pitched whine under acceleration (inner pinion bearing) or on coast (outer pinion bearing); lower-pitched rumble/growl from carrier bearings, often louder when cornering
- Abnormal noise from incorrect ring-and-pinion backlash or wrong tooth contact pattern; noise only when cornering usually points to planetary/side gear or cross-shaft wear
- Oil leaks at the pinion seal and axle shaft seals; degraded, insufficient or contaminated gear oil causing direct metal-to-metal contact and rapid wear
- Axle overheating from excessive bearing preload, too-small backlash or wrong oil grade; metal particles, black oil in the housing indicate advanced internal wear
- Loosened ring-gear-to-case fasteners and worn thrust washers; worn cross-shaft journals
Similar symptoms can come from neighbouring components, so inspect and test before replacing the part.
Workshop experience links differential fluid leak repair to worn universal joints or a tired centre bearing, so the assembly is normally inspected end to end.
Installation notes
These steps apply to differential reference AZ9231320266, listed for For Sinotruk HOWO heavy truck drive axle.
- Confirm reference AZ9231320266 on the original component before removal.
- Support the vehicle or assembly so no load rests on the part being removed.
- Keep mating faces clean and check that sealing surfaces are undamaged around AZ9231320266.
- Fit AZ9231320266 in the original orientation at the Rear drive axle, middle (inter-axle) drive axle differential carrier and tighten fixings to the vehicle manufacturer values.
- Check backlash and the tooth contact pattern after the assembly is seated.
- Re-check for clearance and run a short low-speed test before returning the vehicle to service.
Reference AZ9231320266 is the differential for For Sinotruk HOWO heavy truck drive axle at the Rear drive axle, middle (inter-axle) drive axle differential carrier. Check backlash and the tooth contact pattern after the assembly is seated.fitment is at the Rear drive axle, middle (inter-axle) drive axle differential carrier; watch for gear tooth wear, pitting and spalling on the ring gear, pinion, planet (planetary) gears and side gears after prolonged high-load service – produces a regular knocking/clicking or continuous metallic friction noise; construction uses Steel – cast/forged steel differential case with heat-treated alloy steel gears, cross shaft and bearings for reference AZ9231320266
Work on a differential of this type is normally carried out by a trained technician; reference AZ9231320266 is no exception.
Fitting crews handling differential repair should support the assembly on stands and mark the phasing before disassembly.
Fitting crews handling differential oil change should support the assembly on stands and mark the phasing before disassembly.
Inspect the neighbouring differential seal hardware for wear while the assembly is on the bench.
Inspect the neighbouring tektronix differential probe accessory kit hardware for wear while the assembly is on the bench.
Warranty for AZ9231320266
Reference AZ9231320266 (a differential at the Rear drive axle, middle (inter-axle) drive axle differential carrier) is supplied with a 12 Months warranty against manufacturing defects from the dispatch date.
Claims for AZ9231320266 are handled against the batch reference recorded on the carton. Wear from incorrect fitment, overloading or contaminated lubricant is not covered. Noise from incorrect backlash setting after fitting is not covered.
Vidishi Auto is an independent aftermarket supplier and is not affiliated with Sinotruk; Sinotruk references identify the application only.
Our sales desk answers infiniti g35 differential assembly oem price questions daily and quotes by WhatsApp with lead time and freight included.
Frequently asked questions
Is this a genuine Sinotruk part matching reference AZ9231320266?
How do I confirm AZ9231320266 fits my vehicle?
What is the minimum order for AZ9231320266?
How is pricing for AZ9231320266 shown?
What is the warranty period for AZ9231320266?
Are packaged weight and carton size published for AZ9231320266?
Which numbers does AZ9231320266 cover?
Where does reference AZ9231320266 fit on the vehicle?
What failure signs indicate I need AZ9231320266?
Related parts and pages
Workshops ordering AZ9231320266 Differential Assembly (AZ9231320266) usually check these pages next. Reference AZ9231320266 is built for Sinotruk (China National Heavy Duty Truck Group) – HOWO series vehicles; fitment is at the Rear drive axle, middle (inter-axle) drive axle differential carrier; construction uses Steel – cast/forged steel differential case with heat-treated alloy steel gears, cross shaft and bearings; common wear shows as gear tooth wear, pitting and spalling on the ring gear, pinion, planet (planetary) gears and side gears after prolonged high-load service – produces a regular knocking/clicking or continuous metallic friction noise.
Support and ordering for AZ9231320266
Send reference AZ9231320266, quantity and destination and we will reply with availability, lead time and a delivered quotation for AZ9231320266 Differential Assembly.
WhatsApp us for a quote [email protected]
Delivery, returns and warranty terms for AZ9231320266 are published on the site policy pages.
Catalogue descriptions that mention differential oil normally refer to the same driveline family documented here.
Catalogue descriptions that mention differential cover normally refer to the same driveline family documented here.
The notes above summarise what buyers typically need to know about differential parts before ordering.
Catalogue descriptions that mention differential on a car normally refer to the same driveline family documented here.
Catalogue descriptions that mention differential auto part normally refer to the same driveline family documented here.
This unit is frequently shortlisted by parts departments researching front differential assembly.
This unit is frequently shortlisted by parts departments researching differential assembly in car.
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