SANY OEM 168899000004 Tappet – Precision Cam Follower for Heavy Duty Diesel Engines
168899000004
Tappet
Слив
Agotado
OEM 168899000004 – The genuine SANY parts Tappet (also known as cam follower or valve lifter) is a precision‑machined component that transfers camshaft lobe motion to the pushrod in SANY heavy‑duty diesel engines. With reference 168899000004, this tappet features a hardened bottom face that rides directly on the camshaft lobe, converting rotary motion into linear movement to open and close engine valves.
Manufactured from case‑hardened alloy steel with a precise spherical pushrod socket, the 168899000004 tappet withstands high contact stresses and provides consistent valve lash over thousands of operating hours. It is a direct replacement for Actlon tippers, SY mining trucks, concrete mixers, and all SANY machinery equipped with D09, D12, D13, WP12, and WP13 engines. Trust the authentic 168899000004 component to maintain valve timing accuracy, reduce valvetrain noise, and avoid premature camshaft wear.
Tappet
Толкатель клапана
Levantador de Válvula
168899000004 Tappet – Precision Engine Lifter for SANY Diesel Valvetrains
The tappet with OEM number 168899000004 is a critical mechanical element in the overhead valve (OHV) system of SANY’s D09, D12, D13, WP12, and WP13 diesel engines.
It sits between the camshaft and the pushrod, directly following the cam lobe profile to convert rotary motion into precise linear displacement.
The tappet body is a cylindrical steel component with a case‑hardened, ground bottom face that contacts the camshaft lobe.
This face is typically crowned to ensure proper oil film formation and reduce edge loading under high Hertzian stresses.
The upper end of the 168899000004 tappet contains a spherical socket that accepts the pushrod ball end, allowing for self‑alignment during engine operation.
Genuine SANY tappets are manufactured from high‑carbon chromium bearing steel (SAE 52100 or equivalent) and heat‑treated to achieve a hardness of 58–62 HRC on the bottom face.
The outer diameter is precision ground to fit the tappet bore in the cylinder block with a clearance of 0.02–0.06 mm.
SANY’s design includes an oil feed hole that allows pressurized engine oil to lubricate the camshaft lobe interface and the pushrod socket.
Every genuine 168899000004 tappet is 100% inspected for dimensional accuracy, surface hardness, and microscopic cracks using eddy‑current and magnetic particle methods.
This rigorous quality control ensures long service life and prevents spalling or seizure that could damage the camshaft.
Case Hardened Face
Bottom face hardness 58–62 HRC, ground and crowned for maximum cam lobe life.
Pressurized Oil Feed
Integral oil hole directs lubricant to cam interface and pushrod socket, reducing wear.
Precision Ground Bore
Cylindrical body ground to ±0.005 mm, ensuring smooth reciprocation in tappet bore.
100% NDT Inspected
Eddy‑current and magnetic particle testing guarantees zero subsurface defects.
Technical Specifications – OEM 168899000004 Tappet (Cam Follower)
| OEM Number | 168899000004 |
|---|---|
| Product Name | Tappet (Valve Lifter / Cam Follower) |
| Material | Through‑hardened alloy steel (SAE 52100 / 100Cr6) or case‑carburized steel |
| Bottom Face Hardness | 58–62 HRC |
| Outer Diameter | 25.000 mm ±0.005 mm |
| Overall Height | 50.0 mm ±0.1 mm |
| Pushrod Socket Radius | SR 6.0 mm (spherical) |
| Oil Feed Hole Diameter | 1.5 mm (drilled through side) |
| Surface Finish (Body) | Ra ≤ 0.2 µm (ground) |
| Coating | Zinc phosphate (phosphating) for corrosion protection |
| Compatible Engines | SANY D09, D12, D13, WP12, WP13 series |
Why Genuine SANY 168899000004 Tappet Outperforms Aftermarket Lifters
Aftermarket tappets often use low‑grade steel with insufficient hardness, leading to rapid spalling (pitting) of the bottom face under camshaft contact stresses.
Spalled debris circulates in the engine oil, damaging other components such as bearings and the camshaft itself.
The genuine 168899000004 tappet is manufactured from premium bearing steel and heat‑treated to achieve a uniform, wear‑resistant surface.
Aftermarket parts frequently have poor dimensional accuracy, causing excessive tappet‑to‑bore clearance.
Excessive clearance results in oil pressure loss, increased valvetrain noise, and potential tappet rotation issues.
The precision‑ground body of the genuine tappet ensures consistent oil film thickness and optimal lubrication.
Another common failure of aftermarket tappets is the pushrod socket radius being incorrect or poorly finished.
This can cause the pushrod to wear abnormally or even pop out of the socket, leading to a dead cylinder.
Genuine SANY tappets have a precision‑ground spherical socket that matches the pushrod ball end exactly.
Using genuine 168899000004 tappets ensures the correct valvetrain geometry and eliminates the risk of pushrod dislodgement.
- Bearing steel material with certified heat treatment – no spalling.
- Precision ground OD ensures tight clearance and stable oil pressure.
- Quiet valvetrain operation – reduced engine noise and vibration.
- 100% NDT inspected – no hidden cracks or inclusions.
- Supplied in SANY original packaging with traceable batch code.
- Direct fit for Actlon trucks, SY excavators, concrete mixers, and wheel loaders.
Compatibility Information – SANY Engines & Equipment Using 168899000004 Tappet
The genuine 168899000004 tappet is compatible with SANY D09, D12, D13, WP12G460E50, and WP13G500E30 diesel engine series.
It is used in Actlon 6×4 and 8×4 tippers, SY331, SY412, SY425 mining dump trucks, and SYM3310 series vehicles.
Additional applications include concrete mixer trucks, wheel loaders, motor graders, and STC truck cranes.
Each SANY D12 or D13 engine requires 12 tappets (6 cylinders × 2 valves per cylinder).
Installation Guide for Tappet 168899000004
Always replace all tappets when rebuilding the cylinder head or replacing the camshaft.
Before installation, clean the tappet bores in the cylinder block and ensure the oil feed passages are unobstructed.
Lubricate the tappet body with clean engine oil and insert the 168899000004 tappet into its bore.
Rotate the tappet to verify it moves freely without binding. The clearance should be 0.02–0.06 mm.
Install pushrods, ensuring the ball end sits correctly in the tappet spherical socket.
Adjust valve lash (cold) to SANY specification – intake 0.30 mm, exhaust 0.50 mm.
After initial engine run (30 minutes), re‑torque cylinder head bolts and re‑check valve lash.
Never reuse old tappets on a new camshaft – they must be replaced as a matched set to avoid premature cam failure.
Do not mix tappets between bores; each tappet should be returned to its original position if the camshaft is not replaced.
Use only genuine SANY tappets and pushrods to ensure correct valvetrain geometry and longevity.
SANY Original Quality
Every 168899000004 tappet meets SANY’s material, hardness, and dimensional standards.
Traceable Packaging
Each tappet labeled with OEM 168899000004, heat lot number, and production date code.
Global Availability
Stocked at authorized SANY parts centers for immediate delivery worldwide.
Online Catalog of SANY Parts
Learn MoreIf you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
