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2-Groove Crankshaft Pulley (Harmonic Balancer) For ISUZU TFR/UCS17 8941742811 8941742812 8941742813 8970731570 8-94174281-1 8-94174281-2 8-94174281-3 8-97073157-0
China ISUZU (Qingling) Quality / Famous Brand Aftermarket Quality / Japanese ISUZU Quality for Choose we can offer for this Crankshaft Pulley.We are a One-stop ISUZU ,Hino ,Mitsubishi and Jiangling ,JMC truck parts supplier from China ,focus on all Isuzu trucks spare parts sales for 29 years . Worldwide shipping is supported .DM us for more ,WhatsApp +86 17383152089 .
Description
Products Description
Product Name: Crankshaft Pulley (2-Groove)
Truck Model Fit for: TFR/UCS17
OE NO.: 8941742811 8941742812 8941742813 8970731570 8-94174281-1 8-94174281-2 8-94174281-3 8-97073157-0
MOQ: 1 Pieces
Place of Original:China
Quality:China ISUZU (Qingling) Quality / Famous Brand Aftermarket Quality / Japanese ISUZU Quality for Choose
Color：black
Engine Type Fits: 4ZE1/MPI
Packing: neutral box/color box/customer brand package
Shipping:By Express, By Sea ,By Air, By Railway
Delivery Time:1-8 Working days
Shipping:Worldwide shipping
Payment:TT.paypal.Western Union.Trade Assurance
Warranty:1 Year
Combination Switches are available in three quality grades,China ISUZU (Qingling) Quality / Famous Brand Aftermarket Quality / Japanese ISUZU Quality for Choose. Allowing you to choose the option that best fits your vehicle requirements and budget:
| Quality Grade | Description |
|---|---|
| China ISUZU (Qingling) Quality | Original equipment manufacturer (OEM) standard for Qingling vehicles – reliable and cost-effective |
| Famous Brand Aftermarket Quality | Premium aftermarket brands with excellent durability and performance – ideal for standard replacements |
| Japanese ISUZU Quality | Highest grade, meeting Japanese original equipment specifications – recommended for heavy-duty applications and long-term reliability |
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One-stop Isuzu Truck Parts Supplier From China,
Isuzu Truck Crankshaft Pulley Collection We Can Offer As Below.
China ISUZU (Qingling) Quality / Famous Brand Aftermarket Quality / Japanese ISUZU Quality for Choose
| Product Name | Truck Fit For | Engine Fit For | OE NO. |
|---|---|---|---|
| Crankshaft Pulley (2-Groove) | TFR/UCS17 | 4ZE1/MPI | 8941742811, 8941742812, 8941742813, 8970731570, 8-94174281-1, 8-94174281-2, 8-94174281-3, 8-97073157-0 |
| Crankshaft Pulley (3-Groove) | TFR55/G5/NKR55*T+ | 4JB1/4KH1CT5H1 | 8944548680, 8-94454868-0 |
| Crankshaft Pulley (3-Groove) | NPR | 4HK1-TCS | 8980040243, 8-98004024-3 |
| Crankshaft Pulley (4-Groove) | NKR55G4/NKR77G5 | 4KH1-TCG50 | 8972042040, 8-97204204-0 |
Combination Switch and related products Introduction
Crankshaft Pulley (also known as Harmonic Balancer)
The crankshaft pulley, also referred to as the harmonic balancer, is a critical mechanical component installed at the front end of the engine's crankshaft. It drives accessories such as the alternator, air conditioning compressor, and power steering pump via belts, while its internal rubber damping layer absorbs torsional vibrations generated by the crankshaft.
Main Functions
- Accessory Drive System
The crankshaft pulley transmits the engine's rotational energy through belts (typically a serpentine belt) to power the alternator, water pump, air conditioning compressor, and power steering pump.
- Harmonic Damping
Most pulleys incorporate an internal rubber ring to counteract the intense vibrations caused by the reciprocating motion of the engine's pistons, thereby protecting the crankshaft from metal fatigue and potential failure.
- Valve Timing Assistance
On some older vehicle models, the pulley features timing marks, allowing technicians to calibrate ignition timing or adjust valve clearances.
Crankshaft Pulley (also known as Harmonic Balancer) Failure
A damaged crankshaft pulley is like the "power distribution center" of the engine falling apart. The hazards mainly fall into three categories:
1. Total electrical failure / loss of power steering: The alternator stops charging, the steering wheel suddenly becomes extremely heavy (loss of power assist), and after a short while, the vehicle will stall due to battery depletion.
2. Engine overheating and destruction: The water pump stops turning, causing the engine to severely overheat within minutes, leading to cylinder seizure or cylinder head warping - repairs will be extremely costly.
3. Secondary "cutting" damage: The detached metal ring spins at high speed like a saw blade, cutting through nearby hoses, wiring, and even damaging the radiator.
In a nutshell: Your vehicle is at imminent risk of breaking down on the road due to overheating or electrical failure. Do not start or drive the vehicle under any circumstances. It must be towed to a repair shop for replacement.
Crankshaft Pulley Location
In the Isuzu 4ZE1 2.6L SOHC inline-four engine, the crankshaft pulley (also commonly referred to as a harmonic balancer) is situated at the very front and bottom of the engine.
The following provides a detailed description of its location on this specific engine:
1. Physical Positioning
Horizontal Position: Located at the front end of the engine cylinder block, positioned directly opposite the radiator fan.
Vertical Position: Situated at the lowest point of the engine. Among all the pulleys, it occupies the lowest position and possesses the largest diameter.
Connection Method: It is secured directly to the front journal of the crankshaft via a large central bolt.
2. Structural Features
Multi-Groove Design: The crankshaft pulley on the 4ZE1 engine typically features multiple grooves designed to simultaneously drive several accessory belts.
Combined Functionality: It serves not merely as a drive pulley but also as a harmonic balancer; it incorporates an internal rubber layer designed to absorb the vibrations generated by the rotation of the crankshaft.
Replacing the Crankshaft Pulley
Replacing the crankshaft pulley is a repair operation involving the engine's core power. Improper handling may affect the operation of the alternator, air conditioning, and power steering systems, and in severe cases, can even cause timing jump, leading to engine damage.
Simply put, replacing the crankshaft pulley only requires these four steps:
1. Remove the load: Loosen the tensioner and remove the accessory drive belts.
2. Remove the bolt: Secure the crankshaft (prevent it from rotating) and remove the large center bolt.
3. Pull the pulley: Use a dedicated puller to extract the old pulley (do not hammer it off).
4. Install the new part: Slide the new pulley onto the shaft, replace with a new bolt and tighten it to the specified torque, then reinstall the belts.
Core difficulties: There are only two - first, securing the crankshaft to prevent it from turning; second, the center bolt is extremely tight and requires a breaker bar or an impact wrench.
Related Products We Can Offer- Alternators
ISUZU Series Alternators
- High-Efficiency Power Generation: Designed specifically for the high-load demands of commercial vehicles, capable of delivering a stable current even at idle speeds.
- Voltage Stability: Features a built-in, high-quality voltage regulator that effectively protects the vehicle's Electronic Control Unit (ECU) and entire electrical system.
- Long-Lasting Durability: Utilizes heat-resistant bearings and thickened copper windings to withstand harsh operating conditions.
- Synchronized Operation: This alternator draws power via the crankshaft pulley. Its internal one-way pulley effectively absorbs instantaneous vibrations transmitted from the crankshaft, thereby reducing belt flutter and extending the service life of the alternator bearings. When replacing the alternator, it is recommended to simultaneously inspect the rubber component of the crankshaft pulley for signs of aging.
Related Products We Can Offer – A/C Compressors
Isuzu Series A/C Compressors
- High-Efficiency Cooling: Featuring an optimized internal volume ratio and stable displacement, the unit rapidly establishes refrigerant circulation, ensuring robust performance even under the high-load conditions of summer.
- Low Noise & Smooth Operation: Equipped with a high-quality electromagnetic clutch and precision bearings, the unit engages smoothly and instantaneously, significantly reducing operational noise and vibration.
- Durable Sealing: Core components utilize high-standard seals designed to withstand extreme temperatures and high pressures, effectively preventing refrigerant leakage and extending the product's service life.
- Power Source & System Synergy: The A/C compressor is often hailed as the "heart" of the refrigeration system; however, the true "pacemaker" for this heart is, in fact, the crankshaft pulley. The compressor itself does not generate power; instead, it relies entirely on the drive belt to receive mechanical energy transmitted from the crankshaft pulley.
For more For Isuzu Electrical System Parts we can offer
One-Stop Shop for Engine Accessory & Electronic Control Systems
View More to explore Engine System
View More to explore Chasis System
Reason Why Choose Us To Buy Crankshaft Pulleys ?
1.Professional & Experienced
We have 29 years of experience in commercial vehicle engine parts, focusing on ISUZU, HINO and other heavy‑duty truck models. We know exactly what you need.
2.High-Quality Crankshaft Pulley
Our Crankshaft Pulleys are made of high-quality materials with stable performance, superior vibration damping, and long service life. Perfectly synchronized with Alternators and A/C Compressors to ensure smooth power transmission. All products meet OEM standards.
3.Complete Range & One-Stop Supply
We provide all parts related to ISUZU Electrical System, Engine System Parts , Chasis System or other ISUZU truck system. You can get all you need in one order.
4.Stable Stock & Fast Delivery
Large inventory for hot models, ready to ship. We arrange delivery quickly to reduce your waiting time.
5.Secure Packaging
Strong wooden crate and professional packing to protect parts during long-distance transportation.
6.Professional Service
Professional sales team supports fast response, accurate matching and after-sales support.
7.Original quality can supply
China ISUZU (Qingling) Quality / Famous Brand Aftermarket Quality / Japanese ISUZU Quality for Choose. You can choose what you like , quality is ensured.
8.Different price can supply
If you are a truck parts resaler ,distributor ,company ,we can offer big discount and samples .If you order many pieces in one order ,we also can give clients best price.
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About US
About our company
Chongqing Guanglian Qingling Auto Parts co., ltd
Founded in 1997 and located in the High-tech Zone of Chongqing City, China, we are one of the largest Isuzu parts distributors in China. For about 29 years ,we primarily supply a full range of spare parts for Isuzu trucks, covering models including ISUZU CXH, CYH, CXZ, CYZ, ELF, EXR, EXZ, FMR, FRR, FSR, FTR, FTS, FSS, FVM, FVR, FVZ, FXZ, FYH, GVR, GVZ, GXZ, NHR, NKR, NLR, NMR, NPR, NPS, NQR, QKR, TFR, TFS, UCR, UCS, and UBS. We also supply HINO, NISSAN, and TOYOTA spare parts. Our main products include China Qingling Isuzu original parts, Japan Isuzu original parts, and high-quality branded parts.
We are the trade company, also the wholesaler, do the isuzu qingling parts for more than 20 years. Located in Chongqing city, it is near qingling group, can have fast delivery and the good price, also we cooperated with many factories, so can provide you good price parts, and better after-sale service.
- We are professional Isuzu parts distributor with Over 20 years experience.
- We near to Isuzu China auto factory, Isuzu Qingling Motors which set up in our city Chongqing since year 1985, can provide better quality and service.
- We have an experienced export team, our response within 24 hours.
- On time delivery commitment, 0.1% contract value penalty per day if delay.
Truck Spare parts We can Offer
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For more information about us or need us help you finding Isuzu spare parts ,please inbox us .
Contact our team with your OEM part number, VIN, or fleet details for a precise recommendation.
Our address
Baishiyi Jiulongpo District, High-tech Zone,Chongqing,China
Phone Number/Whatsapp/wechat
+8617383152089
ZCMisuzu@guanglian99.com
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