6N7378 CAT Pulley-Crankshaft
Compatible Models: 3406, 3406B, 3406C, 3406E, 3456, C-15, C-16, C-18, C15, C15 I6, C18, C18 I6, CX31-C15I, CX35-P800, D350E, D350E II, D35HP, D400, D400E, D400E II, G3406, HT400, PM-565, PM-565B, PM3456, RM-250C, RM-350 and more...
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4.7
(Site rating)This Aftermarket CAT 6N7378 Pulley-Crankshaft is manufactured to meet US OEM specifications. Final quality checks were carried out in the United States to ensure that this Pulley-Crankshaft fits and performs like your original unit.
- Replacement Part Number(s): 6N-7378
- 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: 36.06 lbs.
- Condition: New
EXACT FIT GUARANTEE is available on this CAT 6N7378 Pulley-Crankshaft. Our exclusive guarantee program is designed to give you peace of mind with your purchase.
Simply put, we check CAT SIS, to ensure this part is the correct fit for your machine before we ship it out. If it isn't, we'll contact you with the right part number. You can enroll in EXACT FIT GUARANTEE for this CAT 6N7378 Pulley-Crankshaft as you checkout.
Models | 3406, 3406B, 3406C, 3406E, 3456, C-15, C-16, C-18, C15, C15 I6, C18, C18 I6, CX31-C15I, CX35-P800, D350E, D350E II, D35HP, D400, D400E, D400E II, G3406, HT400, PM-565, PM-565B, PM3456, RM-250C, RM-350 |
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Dimensions | 12.20x12.20x7.68 |
Is Costex Product | No |
Is Costex Updated | Yes |
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.
Customer Reviews
Rapid response! Excellent service!
Great place for Cat parts! Had some shipping difficulties, but everything was made right. Parts were perfect and an excellent price. Thanks!
Great customer service!
Buen servicio y atención
To my country the company is doing great The products they market is good and Affordable. They can delivery to any country, stree free. Tested and trusted.
Awesome and diligent support. Would definitely recommend
My part was damaged in shipping and everyone was very helpful on get it resolved and sent me another free of charge.
Online order. I had a good experience this morning I placed an online order and everything went smoothly. The staff at propel parts has always been helpful in the past when I have been looking for harder to find parts or something that wasn’t listed online.
A Delay Handled the Right Way Honestly, if I were in Miami like my shipment was, I wouldn?t have been in a hurry to ship out either. I was frustrated at first ? delays cost me time on the job ? but Propel Parts stepped up. Deb, Daniel and the team owned the mistake, kept the communication clear, and graciously refunded my shipping costs without making it a hassle. That kind of accountability is rare these days, and I genuinely appreciated how they handled it. Things don?t always go perfectly, but these folks proved they?re more interested in doing right by their customers than just pushing parts out the door. Solid company, solid people. ? Jimmy Spong Hartco Mobile Welding P.S. Incredible quality on the pin as well. I had to do some custom modifying, and let?s just say the case hardening was ? well ? hard. Great Stuff! Thank you.
I own old cat bulldozers D8k,D8H,D8N that required frequent repairs and servicing. it was erratic and practically cumbersome to keep them running without constant supply of reliable and affordable spares in Uganda a third world country however,since I started dealing with propel parts US,my bulldozers have earned reliability and efficiency in providing high quality services to clients and making me a great dependable construction company in earth moving. My shipments are always handled expeditiously and delivered in record time to Uganda this is awesome from Propelparts. My business is booming by the clock for finding the best partner in Propelparts.