Carlisle 321370 23x8.50/9.50/10.50-12 TR13 Tire Tube – Heavy-Duty Replacement Inner Tube
Part Number: 321370
Category: Lawn & Garden Equipment Parts → Tires & Wheels → Tire Tubes
Type: Carlisle 321370 23x8.50/9.50/10.50-12 TR13 Tire Tube – Heavy-Duty Replacement Inner Tube
The Carlisle 321370 Tire Tube is a heavy-duty natural rubber inner tube designed for 23x8.50-12, 23x9.50-12, and 23x10.50-12 lawn, garden, and utility tires. Equipped with a TR13 straight rubber valve stem, this replacement tube restores reliable air retention and extends the service life of tires used on riding lawn mowers, garden tractors, utility carts, and other outdoor power equipment. Carlisle identifies Part #321370 as its replacement tube for these tire sizes with a TR13 valve stem.
Key Features & Benefits
- Part Number: 321370
- Genuine Carlisle replacement tire tube
- Fits 23x8.50-12, 23x9.50-12, and 23x10.50-12 tires
- Heavy-duty natural rubber construction
- TR13 straight rubber valve stem
- Helps restore proper air retention
- Ideal for lawn and garden equipment
- Durable construction for long service life
- Suitable for tube-type applications or tubeless tire repairs where an inner tube is appropriate
Technical Specifications
Part Number: 321370
Brand: Carlisle
Product Type: Tire Tube
Tube Size: 23x8.50/9.50/10.50-12
Valve Stem: TR13 Straight Rubber Valve
Valve Offset: 25 mm
Material: Natural Rubber
Compatible Tire Sizes
The Carlisle 321370 is designed to fit:
- 23x8.50-12
- 23x9.50-12
- 23x10.50-12
It is also commonly used with compatible:
- 22x7.50-12
- 22x9.00-12
- 23x10.50-12
- 24x10.50-12
when specified by the equipment manufacturer.
Compatible Applications
Ideal for use on:
- Riding lawn mowers
- Lawn tractors
- Garden tractors
- Zero-turn mowers
- Utility carts
- Yard trailers
- Commercial turf equipment
- Outdoor power equipment with compatible tire sizes
Function of the Tire Tube
The Carlisle 321370 Tire Tube fits inside the tire to provide an airtight seal and maintain proper inflation. It helps to:
- Restore air retention in damaged or tube-type tires
- Reduce downtime caused by punctures
- Extend tire service life
- Improve traction and ride quality
- Support reliable operation of lawn and garden equipment
Common Signs Replacement Is Needed
Replace the tire tube if you notice:
- Frequent loss of air pressure
- Punctures or tears that cannot be repaired
- Dry rot or cracking
- Valve stem damage
- Pinched or damaged tube during tire service
- Excessive aging or deterioration
Replacing a damaged tube helps maintain safe operation and proper tire performance.
Installation & Service Notes
Completely deflate the tire before removing it from the rim.
Inspect the inside of the tire and wheel carefully for nails, sharp objects, rust, or debris before installing the new Carlisle 321370 Tire Tube. Lightly inflate the tube before installation to help prevent pinching, position the TR13 valve stem through the valve hole, and mount the tire carefully. Inflate the tire to the pressure recommended by the equipment manufacturer and check for leaks before returning the equipment to service.
Important: Always verify the tire size and valve stem style before ordering. Avoid pinching the tube during installation and use only the inflation pressure recommended by the equipment manufacturer.
Maintenance Recommendations
- Check tire pressure regularly.
- Inspect the valve stem for leaks or damage.
- Remove sharp debris from tires promptly.
- Avoid operating equipment with underinflated tires.
- Replace damaged tubes immediately to prevent sudden air loss.
- Store replacement tubes in a cool, dry location away from direct sunlight and petroleum-based products to maximize service life.
