
Meritor® Automatic Slack Adjusters
Meritor stroke sensing ASA's unique, proven design keeps brakes in constant adjustment while eliminating the need for frequent under-the truck brake adjustments.
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Product Highlights
Proven stroke sensing design is simple and durable.
Keeps brakes in constant adjustment.
Eliminates the need for frequent under-the-truck brake adjustments.
No external brackets required.
Lubrication holes and groove help eliminate corrosion and seizing up, and result in easier servicing.
Reduce brake maintenance costs and vehicle safety inspection citations.
Top Movers - Automatic Slack Adjusters
Part Number | Description 1 | Description 2 | Application Information |
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R803110 | Meritor ASA without clevis. Unhanded, 1.5 in-28 spline, 5.5 in lever, straight | R801073 is version with clevis | Replaces A32-3275-H-1152 |
R803108 | Meritor ASA without clevis. Unhanded, 1.5 in-28 spline, 5.5 in lever, straight | R801079 is version with clevis | Replaces A24-3275-H-1152 |
R805013 | Meritor ASA without clevis. Unhanded, 1.5 in-28 spline, 5.5 in lever | Extended Lube | Replaces V2-3275-R-1188 |
R803112 | Meritor ASA without clevis. Unhanded, 1.5 in-28 spline, 6.0 in lever, straight | R801074 is version with clevis | Replaces A15-3275-J-1154 |
R801073 | Meritor ASA without clevis. Unhanded, 1.5 in-28 spline, 5.5 in lever, straight | R803110 is version without clevis. | Replaces A32-3275-H-1152 |
R805012 | Meritor ASA without clevis. Unhanded, 1.5 in-28 spline, 5.5 in lever | Extended Lube | Replaces V1-3275-R-1188 |
R810019 | Clevis Kit. | Straight Clevis for 5/8 in.-18 push rods | 1.38” C/C of pins. Clevis kit includes Lightweight Clevis, pins and clips. For standard type 20, 24, 30 and 36 chambers. |
R810021 | Clevis Kit. | Straight Clevis for 5/8 in.-18 push rods | 1.30” C/C of pins. Clevis kit includes Lightweight Clevis, pins and clips. For standard type 20, 24, 30 and 36 chambers. |
General Product Information
Automatic Slack Adjusters
As the leading North American supplier of braking systems, Meritor understands the intricate relationship between Automatic Slack Adjusters (ASA) and foundation brakes. Designed for a variety of applications, Meritor automatic slack adjusters are built to be robust and reliable while offering longer lining life and reduced maintenance.
Meritor maintains stock of hundreds of ASA designs to provide DTNA dealers with the highest level of service. ASA's are available in Daimler PDCs and via Dealer Direct shipments.
Meritor also offers a line of clearance sensing ASAs to provide additional solutions for fleet customers.
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Product Catalog and Literature
Meritor Drum Brake & Wheel End Catalog - PB8857 PDF format
Meritor Clearance-Sensing Automatic Slack Adjusters - SP1639 PDF format
Meritor Stroke-Sensing Automatic Slack Adjusters - SP15102 PDF format
Meritor Cam Brakes and Automatic Slack Adjusters Maintenance Manual - MM4 PDF format
Warranty Information
Standard Meritor Aftermarket Warranty.
We warrant all new parts for one year from date of shipment to the buyer against defective material or workmanship (but not against damage caused by accident, abuse or improper installation, maintenance or repair) when such parts are used on vehicles the specifications of which have been approved by our Engineering Department.
As the exclusive remedy under this warranty, we will, at our option, repair or replace such parts free of charge, or take back the nonconforming parts and refund the monies paid by buyer for such parts, if found on examination by us to be nonconforming and if any necessary return charges are prepaid.
If it is necessary to return any parts under this warranty, buyer agrees not to make any deduction on account thereof from remittances on current accounts while claims are in the process of disposition. Any expense incurred without our consent for repairs or replacement will not be allowed.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS, IMPLIED OR STATUTORY, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE. IN NO EVENT SHALL SELLER BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE.
Only Meritor-branded products, including genuine Meritor and its affiliated brands, are covered by this aftermarket parts warranty.
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Automatic Slack Adjuster - Warranty Information

Pricing information
Competitively priced
Availability information
- Available through DTNA PDC and Direct Ship. Freight is prepaid unless Brake Drums are included.