4JJ1 Camshaft 8982889463 Exhaust Valve Control Side With Timing Gear for Excavator ZX140W-3 SH120-5 ZX120-5 Tire 3/4/5

4JJ1 Exhaust Valve Camshaft 8982889461 With Timing Gear

The 4JJ1 engine is equipped with two camshafts. Part No. 8-98288946-3 is responsible for the opening and closing of the exhaust valves, while Part No. 8-98288940-3 is responsible for the opening and closing of the intake valves.

Key Functions 
Motion Conversion: Converts rotary motion to linear reciprocating motion (and vice versa), powering core truck systems like engines, lift pumps and air compressors for stable operation.
Performance Optimization: Fine-tunes drive belt/chain tension and adjusts valve timing to boost engine power output and reduce fuel consumption.
Vibration Reduction & Balance: Precision dynamic balancing design offsets inertial vibration of engines and transmission systems, minimizing component wear and lowering operation noise.
Special Equipment Drive: Drives dedicated truck attachments, such as dump truck lifting mechanisms and refrigerated truck compressors, ensuring accurate action control under varying loads.

Core Features
Heavy-Duty Material & Craftsmanship:Made of high-strength alloy steel, quenched and tempered for superior impact resistance and wear resistance, ideal for harsh road conditions.
High-Precision Manufacturing: Strictly controlled eccentricity, chrome-plated and precision-ground shaft necks, paired with high-pressure lubrication systems to reduce friction and extend service life.
Reliable Installation & Maintenance: Keyway/flange positioning prevents slippage during operation; preset inspection benchmarks allow easy wear measurement, cutting down maintenance time and costs.
Versatile Compatibility: Redundant structural design adapts to both light-load and heavy-load scenarios, suitable for stock replacement or modification of various trucks, dumpers and special-purpose vehicles.

 
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Our Service
 
1. Supply ISUZU genuine parts , ISUZU Bvp parts , OEM parts , high cost performance China manufacture parts .
 
2. General agent of ORIGIN PARD in China.
 
3. Thirty years of retail and wholesale experience .  The sales group with average of five years experience , can answer any professional question . Equipped with a professional quality inspection team.
 
4. Running seven stores , manage in commercial vehicle and industrial engine parts.
 
5. Can offer competitive purchase price to our client , cause we attain developed distribution channel over the world.
 
 
FAQ
 
1.Q:What is your terms of payment?
A:T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
 
2.Q:Are you manufacturer or trading company?
A: We are both factory and trading company , we combination for more than 10 years. We have invested in 3 factories.
 
3.Q: How about the delivery time of the goods?
A: For testing sample, which it depends on the storage.
For bulk production, the delivery time is about 15-30 days based on order situation.
 
4.Q.:Can you produce according to the samples?
A: Clients’ sample is welcome. We are able to produce the specific products according to your sample.
If you do not find the product you need, tell us detailed information, we have the ability to design and manufacture as requested.
 
5.Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.