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3979953 CAT Alternator

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3979953 | CAT Alternator
$313.27

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4.7

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In Stock | Ships Out Today | Order By 3pm ET
SKU
3979953
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Description for 3979953 Alternator

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This aftermarket Caterpillar 3979953 Alternator is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Alternator.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 3979953 Alternator

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Replacement Part Number(s): 397-9953
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 11.60
Condition: New

Exact Fit Guarantee for 3979953 Alternator

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Looking for a reliable replacement Caterpillar 3979953 Alternator ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
More Information
Dimensions 9.06x9.06x9.06
Product

What is the 3979953 Alternator used for?

This alternator converts mechanical energy into electrical energy to power your equipment’s electrical systems and recharge batteries while in operation.

How to Install this 3979953 Alternator?

Refer to the instructions below to properly install
1. First disconnect the battery to ensure safety 
2. Remove the old alternator carefully and check the mounting area for cleanliness and damage 
3. Align the new alternator with the mounting bracket, secure it with bolts, and connect all electrical terminals 
4. Finally, reconnect the battery and test the electrical system to ensure proper functionality

Which equipment is compatible with this alternator?

This alternator fits multiple heavy machinery models. Always confirm your machine’s model and specifications before purchasing to ensure a correct fit. If you are unsure don’t hesitate to reach out to Propel Parts for help verifying fitment.

How durable is this 3979953 alternator?

This 3979953 Alternator is designed to OEM specifications, delivering reliable performance under normal operating conditions and heavy use.

Can this 3979953 alternator handle high-demand electrical systems?

Yes, it is designed to support all essential electrical functions, even in equipment with high electrical demands, ensuring consistent performance.

How can I maintain this 3979953 alternator for long-term use?

Regular maintenance for this:
1. Regularly inspect the alternator for loose connections, corrosion, or debris. 
2. Keep the mounting and electrical connections clean, 
3. Check the belt tension periodically for optimal performance.

What should I do if the alternator produces unusual noise or fails to charge?

First, check all connections and ensure the belt is properly tensioned. If the problem persists, inspect the alternator for damage or wear and replace it if necessary to prevent electrical system issues.

OEM QUALITY | U.S. TESTED

This part was made to U.S OEM specs. QC was done at our ISO 9001 facilities to guarantee exact fit & performance.


UNSURE OF PART NUMBER?

Provide Serial Number to ensure right part. Call +1-877-228-3765 or Live Chat. We're available 24/7.


Serial Numbers can be found on:

1. Engine Valve Cover or Block Tag.

2. Equipment Body or Cabin


EASY RETURNS

We operate a 30 day no hassle return policy. 


WARRANTY 

In addition to no hassle returns, your part includes a 1 year unlimited warranty.

SAME DAY SHIPPING

Orders placed weekdays, by 3pm ET, ship out same day.


UNITED STATES & CANADA

Click Check Delivery Times for discounted Ground, 2-Day & Overnight rates


INTERNATIONAL SHIPPING

We have served customers in over 90 countries. Click Check Delivery Time .


TRACKING NUMBER

Tracking will be emailed within 24-48 hours of your order.

ACCEPT ALL DEBIT & CREDIT CARDS

We utilize Paypal’s SHA-256 SSL encryption to ensure your payment is secure.


NO CORE CHARGE & NO TAX

The price you see, is the price you pay. There is no core charge or tax for US customers.


INTERNATIONAL CUSTOMERS

In addition to Credit Cards, we accept Bank Wires for international customers.


DUTIES & TAXES

International customers are responsible for country specific Duties and Taxes.

QUALITY GUARANTEED

1 YEAR UNLIMITED WARRANTY

SAME DAY SHIPPING

ORDER BY 3PM EST. EXCL. WEEKEND

PRICE GUARANTEED

NO CORE OR EXCHANGE CHARGES

NO HASSLE RETURNS

EASY RETURNS & FAST REFUNDS

Trustpilot

4.8 Rating. Excellent

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