<p>Keep your Hyundai HL757-7 Loader running with reliable Camshaft Gear 3946436, engineered to restore precise valve timing for Cummins 4B3.9 and 6B5.9 engines. This direct replacement part ensures minimal downtime with OEM-equivalent fit, eliminating the hassle of sourcing from multiple suppliers.</p><ul><li>Compatible with Cummins 4B3.9, 6B5.9, G8.3, ISB, and QSB series engines</li><li>Direct fit for Hyundai HL757-7/HL757TM-7 Loaders and 100D-7/160D-7 Forklifts</li><li>Replaces OE numbers 3946436, J946436, K3946436 for seamless installation</li></ul><p>Backed by strict quality testing, this gear maintains critical camshaft-to-crankshaft synchronization to prevent costly engine damage, delivering the performance you need without the premium OEM price tag.</p>
| Parameter | Details |
|---|---|
| Part Name | Camshaft Gear |
| Replacement Part Number | 3946436, J946436, K3946436 |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| Brand | Applicable Models |
|---|---|
| Cummins Engines | 4B3.9, 6B5.9, G8.3, ISB, ISB CM2150, ISB CM550, QSB3.9 30 CM550, QSB4.5 30 CM550, QSB5.9 30 CM550 |
| Hyundai Machinery | HL757-7, HL757TM-7, 100D-7, 120D-7, 135D-7, 160D-7 |
Equipment downtime costs construction and mining operations thousands of dollars daily. When a camshaft gear fails, it disrupts valve timing, leading to poor engine performance or complete shutdowns. Many operators face the dilemma of overpriced OEM parts with 2–4 week lead times or unreliable counterfeit components that fail prematurely. Finding the right replacement for mixed fleets—especially across Cummins engines and Hyundai machinery—often means jumping between suppliers. We understand this frustration from 10 years of supporting repair shops and fleet managers worldwide.
Our Camshaft Gear 3946436 solves these challenges with precise engineering and ready availability. As a specialized supplier with 10,000+ SKUs in stock, we ensure this critical component meets OEM specifications without the premium price tag. Whether you’re performing scheduled maintenance on a Hyundai HL757-7 loader or紧急 repairs on a Cummins 6B5.9 engine, our ISO-certified manufacturing partners guarantee consistent quality. Each gear undergoes pre-shipment testing to ensure proper tooth alignment and durability, matching the performance of original parts at a fraction of the cost.
This Camshaft Gear 3946436 is engineered for the toughest conditions—from construction sites where loaders operate 12-hour shifts to mining operations with dust and vibration. It plays a vital role in synchronizing the crankshaft and camshaft, ensuring precise valve timing for optimal engine power and fuel efficiency. In Hyundai HL757-7 loaders, it maintains performance during heavy lifting and earthmoving, while in Cummins 4B3.9/6B5.9 engines, it withstands the rigors of continuous operation in harsh environments. Choosing the correct gear prevents timing chain slippage and valve damage, critical for avoiding costly secondary repairs.
Our 3946436 Gear is manufactured from high-grade steel with precision-machined teeth to ensure exact meshing with the timing chain. The material undergoes heat treatment to achieve optimal hardness (HRC 58–62), resisting wear even under high torque loads. Each gear features strict dimensional tolerance control (±0.02mm) for seamless fit with original engine components, eliminating installation issues common with generic parts. The hub design maintains proper shaft engagement, preventing slippage that can cause timing errors. These engineering details translate to a service life comparable to OEM parts, reducing replacement frequency and long-term costs.
Opting for cheap, uncertified camshaft gears may save upfront, but the consequences are expensive. Counterfeit gears often have inaccurate tooth profiles, leading to premature wear and timing issues within 500–1000 operating hours—half the lifespan of quality replacements. A failed gear can bend valves, damage pistons, and require complete engine teardowns, costing $5,000–$15,000 in repairs plus lost productivity. Our ISO-certified 3946436 Gear eliminates this risk, with manufacturing standards that meet or exceed OEM requirements. By investing in reliable parts, you reduce total cost of ownership through fewer failures and extended maintenance intervals.
We partner exclusively with ISO 9001-certified factories and enforce rigorous quality control: incoming material inspection, dimensional accuracy testing, and functional performance checks before shipment. Our 20+ technical experts verify part compatibility within 2 hours, ensuring you get the right component for your specific engine model. With 10 years of exporting to 120+ countries, we’ve built a reputation for reliability—backed by a 3–12 month warranty against manufacturing defects. Our Guangzhou warehouse stocks thousands of common parts, allowing us to ship in-stock items like this camshaft gear within 2–5 working days, minimizing your equipment downtime.
Don’t let equipment downtime eat into your profits. Our Camshaft Gear 3946436 is in stock and ready to ship—order now to restore your Cummins engine or Hyundai loader to full operation. Simply send us your part number, machine model, and quantity, and our team will provide a competitive quote within 24 hours. First-time customers can request sample testing to verify quality before bulk orders. With our 24/7 support and fast shipping, you’ll minimize downtime and get back to work faster.
Q: Is this a genuine OEM part or aftermarket replacement?
A: This is an OEM-equivalent aftermarket part, manufactured by ISO 9001-certified factories to match original specifications.
Q: How can I confirm this gear fits my specific machine?
A: Provide your engine model, machine serial number, or original part number, and our technical team will verify compatibility within 2 hours.
Q: What warranty coverage does this camshaft gear include?
A: We offer a 3–12 month warranty against manufacturing defects. If the part fails under normal use, we provide free replacement or refund.
Q: What is the minimum order quantity?
A: We accept orders for 1 piece, ideal for emergency repairs or single-unit maintenance.
Q: How long will shipping take to my location?
A: In-stock items ship within 2–5 working days. Express delivery takes 3–5 days globally; air freight 7–10 days; sea freight 30–45 days depending on destination.
Q: Can I request a sample before placing a bulk order?
A: Yes, first-time clients can order a sample for testing and quality verification before larger purchases.
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