Reliance Piston Kit

Compatible equipment

This part fits CASE CRUZ-AIR WHEELED EXCAVATOR, CASE LONG TRACK/TURNABLE LEVELER CRAWLER EXCAVATOR, CASE CRAWLER TRACTOR, CASE CRAWLER EXCAVATOR (NORTH AMERICA), BACKHOE, CASE LONG TRACK CRAWLER TRACTOR, LOADER LANDSCAPER, LOADER BACKHOE (NORTH AMERICA), CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, LOADER BACKHOE - BSN JJG0239361, TURBO LOADER BACKHOE, LOADER BACKHOE, CASE WHEEL LOADER (PRIOR TO S/N JAK0021701) (NORTH AMERICA), CASE WHEEL LOADER (S/N JAK0021701 & AFTER) (NORTH AMERICA), CASE WHEEL LOADER (NORTH AMERICA), CASE CONSTRUCTION KING LOADER BACKHOE, CASE CRAWLER EXCAVATOR (PRIOR TO S/N CGG0011601), CASE CRAWLER EXCAVATOR (S/N 120301 & AFTER), CASE CRAWLER EXCAVATOR (S/N 10501 & AFTER), CASE TURBO TRENCHER, TRENCHER SUPPLEMENT (NORTH AMERICAN HOMOLOGATION), CASE CRAWLER EXCAVATOR, CASE CRAWLER EXCAVATOR (S/N 15401-) (S/N 106801-), CASE CRAWLER EXCAVATOR (S/N 74163-74418) (S/N 15201-), CASE TURNTABLE LEVELER CRAWLER EXCAVATOR, CASE EXCAVATOR - TILTING TOOL ATTACHMENT W/QUICK COUPLER, CASE SKID STEER LOADER, CASE SKID STEER LOADER - ASN JAF0311357 (NA) JAF0274360 (EU), CASE WHEEL LOADER including models 1085B, 1086B, 1088, 1150E, 1150G, 1155E, 125B, 35C WL, 550E, 550G, 570LXT, 580L, 580SK, 580SL, 590, 590L, 590SL, 590SM, 621, 621B, 650G, 680L, 688, 688BCK, 688C, 780D, 821, 850D, 850E, 850G, 855D, 855E, 860, 880D, 888, 888B, 9010, 9030, 9030B, 90XT, 95XT, W14B.

Frequently asked questions

What is the part number?

The manufacturer part number is A77731.

Is this a genuine OEM part?

Yes. This is a genuine CASE Construction part.

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.