OTR51140 Automatic Slack Adjuster 1-1/2" 28 Spline 5.5" Arm Replaces AS1140
Real photos | Tested
Shipping
Depends on item size and packaging.
Returns
Limited 14-day coverage on eligible issues.
Local pickup
Available in Taylorsville, UT.
Included and condition
Included
- OTR51140 Automatic Slack Adjuster
- Installation instructions
- Warranty information (if applicable)
Condition
- Graded New. Use the listing photos for final cosmetic review.
- No major extra issues are called out in the listing text beyond what is shown in the photos.
Pickup and support
Pickup location
5500 S Redwood Rd Ste 203
Taylorsville, UT 84123
Mon-Sat 11AM-6PM
Call or text
Share the SKU at 3857156888 if you want a quick confirmation before ordering or pickup.
Get directionsProduct overview
The OTR51140 Automatic Slack Adjuster is a brand new product designed for heavy-duty commercial trucks, trailers, and buses with air brake systems. This essential component ensures optimal braking performance by automatically maintaining proper clearance between brake shoes and drums. It is a direct replacement for Gunite, Haldex, and Bendix AS1140 style slack adjusters, making it a reliable choice for your vehicle maintenance needs. At TamDo.us, we pride ourselves on providing real product photos and clear condition notes. Enjoy fast shipping in 1-2 business days and take advantage of our 14-day return policy for peace of mind. Plus, enjoy free shipping on orders over $150!
Key features
- ✓New condition, ready for installation
- ✓28 spline count for compatibility
- ✓5.5-inch arm length for precise fit
- ✓Replaces AS1140 for easy upgrades
- ✓Ideal for heavy-duty truck maintenance
Product details
SKU#32492- This product is in "New condition"
Up for sale is a brand new OTR Automatic Slack Adjuster (Part # OTR51140). Designed for heavy-duty commercial trucks, trailers, and buses equipped with air brake systems. Ensures proper clearance between brake shoes and drums automatically for optimal braking performance and safety. Direct replacement for Gunite / Haldex / Bendix AS1140 style automatic slack adjusters.
Ideal Usage & Application:
- Heavy-Duty Truck & Semi-Trailer Maintenance: Direct fit for commercial air brake systems on freight trucks, tractors, and trailers.
- Fleet Service & Safety Compliance: Maintains consistent brake stroke, reduces manual adjustment downtime, and keeps vehicles compliant with DOT brake inspection standards.
Specifications:
- Brand: OTR (Expertise Built-In) / Distributed by FleetPride
- Part Number: OTR51140
- Cross Reference / Replaces Part Number: AS1140 / 40010140
- Component Type: Automatic Slack Adjuster
- Shaft Diameter: 1-1/2 Inch
- Spline Count: 28 Splines (28SP)
- Arm Length (Span): 5.5 Inches (5-1/2")
- UPC: 691101634159
- Country of Manufacture: Malaysia
What's included
- 📦OTR51140 Automatic Slack Adjuster
- 📦Installation instructions
- 📦Warranty information (if applicable)
Confirm exact contents in the product photos. Accessories vary per unit.
🌐 Why buy on TamDo.us
Buying pre-owned electronics on TamDo.us means lower prices than retail without sacrificing quality. We photograph each item in our Utah warehouse so you see exactly what you're buying — not stock images. Orders ship fast (1-2 business days) with tracking, and we offer 14-day returns on material defects. Need to inspect in person? Visit our local store at TamDous.com.
Frequently asked questions
Is this slack adjuster compatible with my truck?
The OTR51140 is designed as a universal fit for heavy-duty trucks.
What is the shipping time for this product?
This product ships from Utah within 1-2 business days.
Can I return this product if it doesn't fit?
Yes, we offer a 14-day return policy for your convenience.
Are there any additional parts needed for installation?
No additional parts are required; this slack adjuster is ready for installation.
What condition is this product in?
This slack adjuster is in new condition, ensuring optimal performance.
