New 4L9851 (4L-9851) Air Filter Replacement suitable for Caterpillar Equipment
Compatible Models: 320B, 320B L, 320B U, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321B, 321C and more...
- New Air Filter Replacement suitable for Caterpillar Equipment
- Made to USA Specifications
Buy with Confidence: All parts are covered by our warranty
Six Month Financing
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4.7
(Site rating)- New 4L9851 Air Filter Replacement suitable for Caterpillar Equipment
- Made to USA Specifications
Buy with Confidence: All parts are covered by our warranty
Models | 320B, 320B L, 320B U, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321B, 321C |
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Dimensions | 11.81x11.81x9.06 |
Is Costex Product | No |
Is Costex Updated | No |
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
I would give 5 stars but my first time ordering from here and using aftermarket parts. The price is reasonable comparing to original Cat parts and the customer support is great and hoping to do more business with them
Propel parts is a good Cat vendor that provides a top notch service to customers from ordering to delivery. Their after sales service is really impressive.
Very prompt services !
Great Customer Service! Had some difficulties with the website. Contacted customer service. Once I communicated the issues I was having Steven worked through getting my order processed and making sure I got my receipt and all issues resolved. Perfect!
Propel Parts provided quality parts for my Caterpillar needs at a very fair price. Shipping to my international location was very fast. took about a week for the parts to get here. Seller is also responsive with my inquiry. Thanks again
Excelente servicio rapido, responsable y confiable
Helpful with making sure parts fit my machine
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.
Quick Respond. The quick respond much appreciated. Keep this up.
Great service at an affordable price to get my machine back going.