Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Post Onsite Tank Testing & Repair, Inc. · Electrical & Lighting
31S-POSTTYPE
In stock · ships from Knoxville
This is a Group 31S heavy-duty commercial battery with screw-top (stud) terminals, commonly used in trucks, buses, and heavy equipment.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It provides high cranking amps for starting diesel engines and reliable power for demanding electrical systems. You typically replace it when the battery fails to hold a charge, shows signs of corrosion, or when the vehicle struggles to start. While exact ratings may vary, similar batteries in this category typically deliver 750–1100 cold cranking amps (CCA) and are built to withstand the vibrations and harsh conditions of commercial operations.
Part Number: 31S-POSTTYPE
31 SCREW TOP BATTERY
Vendor: Post Onsite Tank Testing & Repair, Inc.
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting