drive-belt-tensioners-21422767-0

(2 Pack) Heavy Duty Engine Belt Tensioner Compatible With Volvo, Mack- Drive Belt Tensioner Replaces OEM: 21422767, 3808532, 38585, 814.89457, GYR49572, VOL21422767, 89457DAY

drive-belt-tensioners-20487079-1

New Belt Tensioner Fit for Volvo Truck D11 D12 D13 Engine 8149879 20487079

3976831 Belt Tensioner Kit Replacement for Cummins 4B4.5, 4BT3.9, 6BT5.9, 6CT8.3, ISB3.9, ISB5.9, QSB 5.9, QSC8.3, QSL9 6CT 6CTA 6CTAA Engine

Technical Details
Item Weight 3.93 pounds
Package Dimensions 8.86 x 5.04 x 3.07 inches
Exterior Machined
OEM Part Number 3976831
Position Inside
$75.00
Availability: In stock
SKU
carpart-1040698
OR
1 x Belt Tensioner - Standard Size, Manufactured to OE specification, factory inspected,fully fit original car, reliable quality, durability
REPLACE - 3976831, 100% brand new
Fits - for Cummins 4B4.5, 4BT3.9, 6BT5.9, 6CT8.3, ISB3.9, ISB5.9, QSB 5.9, QSC8.3, QSL9 6CT 6CTA 6CTAA Engine
Why - Resolve problems such as engine overheat , decreased power or abnormal noise, timely replacement, avoid damaging the engine, ensure safety on the road
When - Common symptoms of the damage include breakage or wear, strange noises(squeaking, buzzing, or metal friction),Charging anomalies, engine overheating, belt vibration or misalignment etc
Premium Support - Easy to reach customer service, we focus on product quality and customer service, our customer service is first-rate
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You're reviewing:3976831 Belt Tensioner Kit Replacement for Cummins 4B4.5, 4BT3.9, 6BT5.9, 6CT8.3, ISB3.9, ISB5.9, QSB 5.9, QSC8.3, QSL9 6CT 6CTA 6CTAA Engine
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Packing and shipping

Packaging Regulation :

Wooden Box / Carton

Delivery time :

7~14 days(About)

Conditions :

New and Genuine

How do you order?

Okcarpart makes ordering GET Parts easy. Simply send a mail to us. Instead of searching online and guessing which parts you need, our team will make sure you get the correct parts. We process and deliver your order fast, and always at a competitive price. Enjoy 5-star service!


1.IDENTIFY
Determine the parts you need. To ensure the correct parts are quoted, it's best to have the machine make and model, along with part numbers and photos of the nameplate if possible. Our team of professionals are here to help ensure you get the correct parts that fit and work the first time. Our sales team can also survey and help identify the parts you may need. Please email us to get started!

2.ORDER
Our professional internal sales teams and strong supply chain system will assist you to identify the right parts, and can recommend the most cost-effective solution for you. Our team of professionals will process your order, and ensure your order is correct the first time. With over 15 years in the business, we remove the guesswork and always deliver.

3.DELIVER
We'll ship or deliver your products as required, to your nominated location. If you're also located elsewhere, we'll identify the best shipping options for both price and delivery time. Email us now!

FAQs

Certified stamp

Q1: What is the difference between OEM and Aftermarket parts, and how do I select the right quality level for my needs?

A: OEM (Original Equipment Manufacturer) parts guarantee exact fit and factory quality, typically at a higher cost. Our Aftermarket parts are sourced from certified manufacturers, often offering comparable performance and superior value. We clearly label all products to allow the customer to make an informed choice based on budget and required lifespan.

Q2: Since you are a global supplier, how do I calculate total shipping costs and estimated delivery time to my country/region?

A: Shipping costs are calculated based on part dimensions, weight, and the destination country during checkout. We offer multiple options (e.g., Economy, Express) with transparent, real-time tracking. Delivery times are clearly displayed and factor in customs processing for international orders.

Q3: What is the warranty period on your auto parts, and what does the warranty actually cover?

A: Most new parts carry a minimum 12-month limited warranty covering defects in material and workmanship, excluding wear and tear and improper installation. The specific warranty details (period and coverage) are clearly listed on each product page.

Q4: How secure is my personal and payment information when placing an order on "okcarpart" ?

A: We use industry-leading security protocols, including SSL encryption and reputable global payment gateways (TT, Visa, Mastercard, PayPal). We strictly comply with global data protection regulations to ensure customer information is secure and protected against fraud.

Q5: We conduct annual targeted procurement of autoparts and repair kits to sustain production. I'd like to know if there are any contract discounts available?

A: Absolutely. Our primary strength lies in supply capability. Whether it's OEM manufacturing or global inventory searches—from components to complete units—we can match your needs with the nearest partner's inventory for rapid delivery. Our global alliance enables transactions at wholesale agency rates.