1025300FD02003 Automatic Serpentine Belt Tensioner Spring Loaded Tension Assembly For HFC4DB2-1D JAC Light Truck Diesel Engine Accessory Drive Parts
Product Details
| OEM: | 1025300FD02003 | Vehicle Model: | HFC4DB2-1D |
|---|---|---|---|
| Classification: | Engine Parts | Type: | Cooling System |
| Highlight |
Light Truck Automatic Serpentine Belt Tensioner,1025300FD02003,1025300FD02003 Automatic Serpentine Belt Tensioner |
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Product Description
1025300FD02003 Belt Tensioner is an automatic spring tensioning assembly for HFC4DB2-1D engine multi-ribbed belt drive system. It provides continuous elastic preload to the PK belt, compensating belt elongation and torque fluctuation when driving alternator, water pump and other hydraulic accessories. This aftermarket replacement tensioner resolves frequent squealing noise during acceleration, unstable charging output and accelerated belt cracking caused by torsion spring fatigue, damping rubber aging and rough bearing rotation of old units. Stable tension keeps accessory transmission pressure steady and prevents sudden failure for JAC light trucks running frequent start-stop city delivery and short-haul cargo routes.
Product Advantages Adopts high-strength torsion spring to maintain consistent tension under long-term vibration and cyclic temperature change. Built-in damping structure absorbs load shock and reduces tension oscillation. Hardened pulley surface paired with precision bearing ensures low-noise sliding and wear resistance. Every tensioner is inspected for travel range, spring force and pulley rotation before shipment, OEM mounting contour supports quick bolt-on installation during overhaul.
| Item | Parameter |
|---|---|
| Part Number | 1025300FD02003 |
| Product Name | Belt Tensioner |
| Matching Engine | HFC4DB2-1D |
| Material | Cast Alloy Housing, Torsion Spring, Idler Pulley with Bearing |
| Feature | Automatic Tension Adjustment, Anti-Slip, Vibration Resistant |
| MOQ | Negotiable |
| Application | Engine Auxiliary Drive Belt Tension Mechanism |
Applicable Models Designed for JAC light commercial vehicles equipped with HFC4DB2-1D diesel engine, widely used in township logistics and local cargo delivery fleets.
FAQ
Q1: What typical symptom indicates this tensioner has failed?
A1: Squeal occurs when accelerating, and the sound disappears temporarily after engine warm-up.
Q2: Why should we check all accessory pulleys before installing this new tensioner?
A1: Seized or rough pulleys create extra load, which quickly damages the new tensioner and belt.
Q3: Can a worn tensioner be misjudged as a bad belt?
A3: Yes; replace the belt first. If squeal remains, the tensioner is the root cause.
Product Highlights
1025300FD02003 Belt Tensioner is an automatic spring tensioning assembly for HFC4DB2-1D engine multi-ribbed belt drive system. It provides continuous elastic preload to the PK belt, compensating belt elongation and torque fluctuation when driving alternator, water pump and other hydraulic accessorie...
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