Liftmaster K75-37300-2, E-BOX

Liftmaster K75-37300-2, E-BOX

The LiftMaster K75-37300-2 is an E-box replacement kit for select LiftMaster CSW series commercial swing gate operators. The E-box provides the protected mounting and routing area for control wiring, electrical connections and service access inside the operator.

This part is commonly referenced for CSW and CSW200 series swing gate operator applications. It should be kept separate from K75-37300-1, which is the SL3000 slide gate E-box reference. The two parts may sound nearly identical, but they are used on different operator families with different cabinet and wiring layouts.

What This Part Does

• Replaces the electrical box assembly on compatible CSW series swing gate operators.
• Provides a protected service area for wiring and control components.
• Helps restore correct enclosure integrity after impact, corrosion or cabinet damage.
• Maintains proper wire routing and mounting when matched to the correct CSW parts diagram.

Features & Specifications

Compatible With

Common Compatible Models

• LiftMaster CSW series commercial swing gate operators where K75-37300-2 is listed.
• LiftMaster CSW200 / CSW200UL style swing gate operators when the parts diagram confirms the E-box.

Additional Model Families to Verify

• Older Elite / LiftMaster CSW operator generations using the same electrical box assembly.
• CSW dual or special configurations only when the original parts diagram calls for K75-37300-2.

Important Compatibility Notes

K75-37300-2 is the CSW swing gate E-box reference. Do not substitute the SL3000 K75-37300-1 E-box by part number similarity.

Also Known As / Related Part Numbers

• K75-37300-2
• 75-37300-2
• LIF-K75-37300-2
• LiftMaster CSW E-box
• CSW200 electrical box assembly
• CSW200UL E-box
• CSW swing gate control box

Technician Note

If the old E-box has corrosion, look closely at terminals, accessory wiring, board connections and grounding. Electrical box damage is often a symptom of water intrusion or impact.

Before Ordering Checklist

• Confirm the operator is a CSW or CSW200 style swing gate operator.
• Verify K75-37300-2 in the parts diagram.
• Compare cabinet mounting points and wire routing openings.
• Check whether internal components, diagrams or hardware transfer from the old E-box.
• Do not confuse this with K75-37300-1 for SL3000 slide gate operators.

Professional Advisory

E-box replacement involves the operator electrical area. Disconnect power and have a qualified gate technician handle any high-voltage wiring or unsafe gate movement issues.

Product Questions & Answers

Which operator family commonly uses K75-37300-2?

It is commonly listed for LiftMaster CSW series swing gate operators, including CSW200 style applications when confirmed by parts diagram.

Is K75-37300-2 interchangeable with K75-37300-1?

No. K75-37300-2 is tied to CSW swing gate applications, while K75-37300-1 is tied to SL3000 slide gate applications.

Does this part repair a bad circuit board?

No. It is an E-box assembly. A bad circuit board should be diagnosed and replaced separately.

Why does the E-box layout matter?

The E-box must line up with the cabinet, wiring paths, mounting hardware and service access points.

Should the operator be inspected before replacing the E-box?

Yes. Damage to the E-box can also affect wiring, grounding, terminals and control components.