5/8IN-18 Master Link Bolt

Enhance your heavy equipment performance with the Case Construction 5/8in-18 Master Link Bolt #135778A1. Engineered for durability and strength, this essential component ensures secure connections for optimal operation in demanding construction environments. Trust Case for reliability. This product is a genuine OEM part, ensuring quality and reliability.

Compatible equipment

This part fits CASE CRAWLER TRACTOR (NORTH AMERICA), CASE CRAWLER TRACTOR, SERIES 3 CRAWLER DOZER TIER 3 (NA/EU), CRAWLER DOZER - TIER 4A, CRAWLER DOZER - TIER 4B including models 1150C, 1150D, 1150E, 1150G, 1150H, 1150K, 1150M LT, 1150M WT, 1150M WT/LGP, 1155D, 1155E, D125C LT, D125C WT/LGP, D150C WT/LGP, D150C XLT.

Frequently asked questions

What is the part number?

The manufacturer part number is 135778A1.

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.