Liftmaster K77-37708, COVER, SL3000AC
The LiftMaster K77-37708 is a replacement cover for SL3000 Series AC commercial slide gate operators. The cover protects the operator chassis, motor area, control components, and drive hardware from rain, sun, dust, insects, and physical contact. It is commonly replaced when the original cover is cracked, missing, heavily weathered, or no longer sitting securely on the operator.
This is a model-specific cover, not a universal slide gate housing. SL3000AC, SL3000U, and related SL3000 configurations can share similar service references, but the parts diagram should confirm the cover before ordering. A wrong cover can interfere with access, clearance, ventilation, locking, or weather protection.
Compatible With
Common Compatible Models
- LiftMaster SL3000AC commercial slide gate operators
- LiftMaster SL3000U commercial slide gate operators
- LiftMaster SL3000UL slide gate operators where K77-37708 is specified
- LiftMaster SL3000501U variant where listed in the parts diagram
Additional Model Families to Verify
- LiftMaster SL3000 Series AC commercial slide gate operator applications
Important Compatibility Notes
- Some suppliers list this as made-to-order or extended lead time.
- Do not substitute CSL, RSL, CSW, or HCT covers by appearance.
- Confirm whether the order includes cover only or any labels/hardware if those pieces are needed.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Replacement operator cover |
| Part Number | K77-37708 |
| Application | SL3000 Series cover replacement |
| Compatible Operator Type | AC commercial slide gate operator |
| Common Models | SL3000AC, SL3000U, SL3000UL, SL3000501U where specified |
| Material | Polyethylene cover in some listings |
| Notes | Verify SL3000 parts diagram and generation |
Also Known As / Related Part Numbers
- K77-37708
- K7737708
- LM-K77-37708
- LIF-K77-37708
- K77-37708 cover
- SL3000AC cover
- SL3000U cover
Technician Note
Use this part when the original component is damaged, missing, cracked, corroded, worn, or no longer holding the related operator assembly correctly. Because many LiftMaster and Elite parts look similar across generations, final fitment should be based on the model number and replacement parts diagram, not appearance alone.
Before Ordering
- Match the part number on the existing component or the operator parts diagram.
- Confirm the operator model, series, voltage or configuration where applicable.
- Compare mounting points, cover shape, harness plugs, and included hardware before installation.
- Do not substitute similar-looking LiftMaster parts unless the parts diagram confirms the match.
Professional Advisory
Installation should be performed with power disconnected and the gate secured. For high-voltage wiring, damaged enclosures, missing safety devices, or uncertain fitment, use a qualified gate technician.
Product Questions & Answers
What is K77-37708 used for?
It replaces the protective outer cover on select LiftMaster SL3000 Series AC slide gate operators.
Which models commonly use this cover?
Common references include SL3000AC, SL3000U, SL3000UL, and SL3000501U configurations where listed in the parts diagram.
Is this the same as a CSL24V cover?
No. SL3000 and CSL24V covers are different service parts and should not be interchanged.
Why replace a damaged operator cover?
A damaged cover can expose the motor, drive parts, and electronics to weather, dirt, insects, and physical damage.
Does this cover include mounting hardware?
Kit contents can vary by supplier listing. Confirm whether hardware, labels, lock, or keys are included if needed.
