Diffuser

Enhance your Case Construction equipment’s performance with the Case Construction Diffuser #125688A1. Designed for durability and efficiency, this essential part ensures optimal airflow and engine function, keeping your heavy machinery running smoothly on any job site.

Compatible equipment

This part fits LOADER LANDSCAPER, SERIES 3 LOADER LANDSCAPER TIER 3 - ASN N8C510600, LOADER LANDSCAPER - LIVERY - TIER 4B, LOADER LANDSCAPER - TIER 4B, LOADER LANDSCAPER - TIER 4A ASN NCC570600, LOADER BACKHOE (NORTH AMERICA), SERIES 2 LOADER BACKHOE - ASN JJG0239360, CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, LOADER BACKHOE - BSN JJG0239361, TURBO LOADER BACKHOE, LOADER BACKHOE, SERIES 2 LOADER BACKHOE - ASN JJG0210575, MOTOR GRADER TIER 2- BTW 020101-020187, MOTOR GRADER TIER I (BR) - ASN N8AF07000, MOTOR GRADER - TIER 3 (NA) - ASN N7AF03356, MOTOR GRADER - TIER 3 (NA) - ASN N8AF03592, MOTOR GRADER - ASN 022001, MOTOR GRADER TIER 2 - ASN 022101, MOTOR GRADER TIER 3 (NA), MOTOR GRADER - ASN N5AF04007, MOTOR GRADER - TIER 3 (NA) - ASN N7AF04232 & N6AF04226, MOTOR GRADER TIER 3 (BR) - ASN N8AF04429, MOTOR GRADER TIER 3 (NA) - ASN N8AF04429, MOTOR GRADER TIER 0 - TIER 2 (BR) - ASN N8AF05114, MOTOR GRADER TIER 3 (NA) - ASN N7AF05055, MOTOR GRADER TIER 3 (NA) - ASN N8AF05110 including models 570LXT, 570MXT, 570N EP, 570NXT, 580L, 580SK, 580SL, 590, 590L, 590SL, 590SM, 845, 845 DHP, 865, 865 AWD, 865 DHP, 865 VHP, 885, 885 AWD.

Frequently asked questions

What is the part number?

The manufacturer part number is 125688A1.

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.

Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.

30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.