Adapter

Enhance your heavy equipment’s versatility with the Case Construction Adapter #KRJ1231. Designed for seamless compatibility, this durable adapter ensures optimal performance and efficiency, making it an essential addition for any construction professional looking to maximize productivity on the job site.

Compatible equipment

This part fits 6UZ1XASS01 - ISUZU DIESEL ENGINE - TIER 4B, CASE CRAWLER EXCAVATOR (EU) (DC33B6001 DCH330R3N5EAP7001 & AFTER), CASE CRAWLER EXCAVATOR (EUR), CASE CRAWLER EXCAVATOR (NORTH AMERICA), CRAWLER EXCAVATOR TIER 3 - ASN N5SAP7001 - (NA), CASE CRAWLER EXCAVATOR (EU) (DCH350R3N6EAR7001 & AFTER), CASE CRAWLER EXCAVATOR (EUROPE), CRAWLER EXCAVATOR TIER 3 (EU), CRAWLER EXCAVATOR TIER 3 (NA), CRAWLER EXCAVATOR - TIER 3 (CHINA), CRAWLER EXCAVATOR (NORTH AMERICA), CRAWLER EXCAVATOR TIER 3 (EU) (DC46B6001 DCH460R3N6EAS7001-), CRAWLER EXCAVATOR - TIER 3 (EUROPE), HRD CRAWLER EXCAVATOR (EU), CRAWLER EXCAVATOR - TIER 4 (NA), CRAWLER EXCAVATOR TIER 4 (EU), CRAWLER EXCAVATOR - TIER 3 (CHINA) - S/N NXSFXXXXX, CRAWLER EXCAVATOR - TIER 3 (LATAM) - S/N NXSFXXXXX, CRAWLER EXCAVATOR - TIER 3 (TURKEY) - S/N NXEFXXXXX, LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 3 (CIS/RUSSIA), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 3 (EAST ASIA), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 3 (TURKEY) - S/N NXEFXXXXX, 8 LC - LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 3 (CHINA), CRAWLER EXCAVATOR - LONG CARRIAGE - STAGE V (EU), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (APAC), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (EU), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (MEA-MIDDLE EAST AFRICA), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (NA), CRAWLER EXCAVATOR - RETRACTABLE CARRIAGE - STAGE V (EU), RETRACTABLE CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (EU), RETRACTABLE CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (NA), CASE IH CX-SERIES DIESEL TRACTOR, LONG CARRIAGE MASS EXCAVATION - CRAWLER EXCAVATOR - TIER 3 (CIS/RUSSIA), 8 LC ME - LONG CARRIAGE MASS EXCAVATION - CRAWLER EXCAVATOR - TIER 3 (CHINA), CRAWLER EXCAVATOR - LONG CARRIAGE MASS EXCAVATION - STAGE V (EU), CRAWLER EXCAVATOR - RETRACTABLE CARRIAGE MASS EXCAVATION - STAGE V (EU), RETRACTABLE CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (MEA), CRAWLER EXCAVATOR - TIER 4, CRAWLER EXCAVATOR TIER 3 (EU) - DC80B6001 N6EAU7001-, CRAWLER EXCAVATOR - TIER 3 (CHINA) - S/N NXKFXXXXX, CRAWLER EXCAVATOR - LONG REACH W/BLADE - STAGE V (EU), CRAWLER EXCAVATOR - W/BLADE - STAGE V (EU), CRAWLER EXCAVATOR TIER 3 including models AQ, CX330, CX350, CX350B, CX360B, CX370B, CX460, CX470B, CX470C, CX490C, CX490C LC, CX490D LC, CX490D RTC, CX50, CX500C, CX500C LC ME, CX500D LC, CX500D LC ME, CX500D RTC, CX500D RTC ME, CX60, CX70, CX700, CX700B, CX750D RTC.

Frequently asked questions

What is the part number?

The manufacturer part number is KRJ1231.

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.

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.