CASE CONSTRUCTION OEM Part No. A51916

O-ring

Case Construction ·14 Fitments

$8.85 USD · per unit Available
Ships fastFrom our warehouse
30-day returnsNo restocking fees
OEM guaranteedDirect from manufacturer
Machine Model Years
4 CYLINDER DIESEL ENGINE 207 1975 – 1980
DIESEL ENGINE SUPPLEMENT 207 1975 – 1980
CASE CRAWLER TRACTOR (S/N 3060306 & AFTER) 450 1975 – 1980
CASE CRAWLER TRACTOR 450B 1978 – 1983
CASE CRAWLER TRACTOR 455B 1983
CASE CONSTRUCTION KING TRACTOR W/SHUTTLE TRANSMISSION 580B 1971 – 1977
CASE CONSTRUCTION KING LOADER BACKHOE 580C 1975 – 1980
CASE CONSTRUCTION KING LOADER BACKHOE 580D 1980 – 1984
CASE SUPER-D CONSTRUCTION KING LOADER BACKHOE 580SD 1980 – 1984
CASE CONSTRUCTION KING FORKLIFT 584C 1979 – 1988
Product Overview

The A51916 o-ring helps seal mating surfaces to prevent leakage under pressure, supporting dependable operation in Case equipment. This part maintains alignment and reduces the need for frequent service.

Key Features
  • Part Number: A51916
  • Diagram Reference Number: 2
  • Package Quantity: 1
Product Specifications
  • Package Weight: 0.013 lbs
  • Package Length: 4.488 in
  • Package Width: 3.74 in
  • Package Height: 0.394 in
  • Related Parts: IC:A50975, IC:A44083

Compatible equipment

This part fits 4 CYLINDER DIESEL ENGINE, DIESEL ENGINE SUPPLEMENT, CASE CRAWLER TRACTOR (S/N 3060306 & AFTER), CASE CRAWLER TRACTOR, CASE CONSTRUCTION KING TRACTOR W/SHUTTLE TRANSMISSION, CASE CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-D CONSTRUCTION KING LOADER BACKHOE, CASE CONSTRUCTION KING FORKLIFT, TRENCHER - CASE 207 DIESEL ENGINE, CASE UNIT LOADER including models 207, 450, 450B, 455B, 580B, 580C, 580D, 580SD, 584C, 585C, 586C, DH5, W11.

Frequently asked questions

What is the part number?

The manufacturer part number is A51916.

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.

Manufacturer part number
A51916
Internal SKU
IC:A51916
Brand
CASE CONSTRUCTION
Condition
OEM, new
Category
Case Construction
Weight
0.01 lb

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.

This part appears in these diagrams

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