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New 2P1388 Belt Set(2) Replacement suitable for Caterpillar 3306, 3126B, C-9, C7, C9, CX31-C9I, TH31-C9I, TH31-C9P, CX31-P600, TH31-E61, 528B, 530B, and more
- New Belt Set(2) Replacement suitable for Caterpillar Equipment
- Made to USA Specification
Buy with Confidence: All parts are covered by our warranty
4.7
(Site rating)Description for 2P1388 Engine Belt Set
▶Specification for 2P1388 Engine Belt Set
▶Exact Fit Guarantee for 2P1388 Engine Belt Set
▶| Models | 3126B, 3306, 528B, 530B, C-9, C7, C9, CX31-C9I, CX31-P600, TH31-C9I, TH31-C9P, TH31-E61 & more |
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| Dimensions | 2.76x1.97x11.81 |
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perfect service
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Customer service was excellent today! I have never had a company go behind the scenes to see what was happening with my payment error and resolve it so I could complete my order without having to do it all over again. Hats off to Propel Parts!
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Fast response and very attentive! Thanks Deb.
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Great pricing and fast shipping!
I'll admit that I was skeptical of propel parts, but they are an honest site and came through with the order. I was skeptical because I've never ordered heavy machinery parts, and didn't know who to trust. The parts that I ordered showed in stock, but after checking with their vendor, they only had half of the order in stock. I was notified the day after the order, and most of the parts arrived in a few days. There was one part that was not shipped putz but I was able to talk with who I assumed is the owner who rectified the situation and had the part overnighted to me.
I will say that communication speed could use a little work, but they will eventually get back with you. -
Great service They respond back very fast always try…
They respond back very fast always try there best to get what I need
Very friendly
Prices are reasonable
If there is a problem they fix it
Been working with them 4 years and hopefully many more
Frequently Asked Questions
What is the function of the 2P1388 belt set?
The 2P1388 belt set includes essential drive belts that transfer power from the engine’s crankshaft to accessories like the alternator, water pump, fan, and air conditioning compressor. These belts ensure proper operation of multiple systems and help maintain overall machine performance.
How do I install the 2P1388 belt set?
Here’s a general guide for proper installation:
- Turn off the engine and disconnect the battery before starting.
- Locate the belt routing diagram on your machine or service manual.
- Loosen the tensioner or adjuster to relieve tension on the old belts.
- Remove the old belts from pulleys.
- Compare the new belts from the 2P1388 set to the removed ones to ensure correct size.
- Route each new belt according to the routing diagram, making sure it seats properly in pulley grooves.
- Adjust tensioner or adjuster to the correct belt tension as specified in the service manual.
- Reconnect the battery and start the engine to confirm proper belt alignment and operation.
Which machines or engines use the 2P1388 belt set?
The 2P1388 belt set is compatible with a wide range of Caterpillar engines and equipment including 3306, 3126B, C-9, C7, C9, CX31, C9I-TH31, C9P, CX31-P600, TH31-E61, 528B, 530B, and more. Always verify compatibility using your machine’s service or parts manual before ordering. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 2P1388 belt set meet performance expectations?
Yes, the 2P1388 belt set is engineered to meet or exceed OEM specifications for belt strength, flexibility, and wear resistance. High-quality belts help support efficient power transfer, minimize slippage, and provide long service life even under heavy-duty operating conditions
How often should belts in the 2P1388 set be inspected or replaced?
Belts should be inspected regularly, especially during routine maintenance intervals. Look for signs of wear such as cracks, fraying, glazing, or excessive slack. Replace belts showing these signs to prevent breakdowns and loss of accessory function.
What are common signs that the 2P1388 belts need replacement?
Typical indicators include:
- Squealing or chirping noises from the belt area
- Visible cracks, frays, or splits in the belt material
- Slippage under load, especially at startup or during heavy engine use
- Overheating or poor performance of accessories like the alternator, fan, or A/C system
Why is using a quality belt set important for equipment performance?
A quality belt set ensures reliable power distribution to vital engine accessories. Using belts that meet or exceed OEM specifications helps maintain proper cooling, charging, and accessory function while reducing the risk of premature belt failure, downtime, and costly repairs.
This 2P1388 Engine Belt Set is compatible with the following models:
3126B, 3306, 528B, 530B, C-9, C7, C9, CX31-C9I, CX31-P600, TH31-C9I, TH31-C9P, TH31-E61 & more...
Shipping
We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.
Easy Returns
Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.
Warranty
Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
1 YEAR UNLIMITED WARRANTY
ORDER BY 3PM EST. EXCL. WEEKEND
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EASY RETURNS & FAST REFUNDS
