Case Construction OEM Part No. 3121549R1

Knob

Cab and ROPS

$25.68 Available

5 verified fitments

Select your machine to check fit

Not sure it’s the right part? Talk to a parts specialist (740) 432-6303Mon–Fri 7:30 AM–5 PM EST

Ships nationwideUPS, USPS & freight

30-day returnsNew, unused parts

OEM guaranteedDirect from manufacturer

Machine	Model	Years / S/N
CASE IH FRONT END LOADER	520	1992 – 1995
TRENCHER SUPPLEMENT (NORTH AMERICAN HOMOLOGATION)	560	1963 – 1993
CASE TERRATRAC CRAWLER TRACTOR (DIESEL)	600	1957 – 1958
CASE TERRATRAC GASOLINE CRAWLER TRACTOR	600	1957 – 1958
CASE TRENCHER	660	1986 – 2003

Enhance your Case Construction equipment’s performance with Knob #3121549R1. This durable, high-quality replacement part ensures optimal functionality and ease of use, keeping your heavy machinery running smoothly on the job site. Perfect for maintenance and repairs.

Compatible equipment

This part fits CASE IH FRONT END LOADER, TRENCHER SUPPLEMENT (NORTH AMERICAN HOMOLOGATION), CASE TERRATRAC CRAWLER TRACTOR (DIESEL), CASE TERRATRAC GASOLINE CRAWLER TRACTOR, CASE TRENCHER including models 520, 560, 600, 660.

Frequently asked questions

What is the part number?

The manufacturer part number is 3121549R1.

Is this a genuine OEM part?

Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option.

Will this fit my machine?

See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.

Where does this ship from?

Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.

WARNING:For California residents — Cancer and Reproductive Harm. www.P65Warnings.ca.gov

Manufacturer part number: 3121549R1
Brand: Case Construction
Condition: OEM, new
Category: Cab and ROPS
Weight: 0.22 lb

Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.

Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.

30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.

$25.68