Liftmaster K99-COB-38TPT, 3/8" TOP PLATE, 36" TEETH

Liftmaster K99-COB-38TPT, 3/8" TOP PLATE, 36" TEETH

The LiftMaster K99-COB-38TPT is a heavy 3/8 inch Cobra top plate with 36 teeth for LiftMaster traffic spike applications. It is used in directional vehicle-control lanes where the top plate and tooth profile must stay straight, secure, and properly positioned for the spike system to work as intended. This part is different from the 1/4 inch top plate and from CR-labeled versions. Match the plate thickness, tooth count, and Cobra system style before ordering, especially when repairing an older surface-mount or in-ground lane assembly.

Compatible With

• Various LiftMaster Cobra Traffic Spike Systems using K99-COB-38TPT
• Cobra traffic spike assemblies requiring the 3/8 inch 36 teeth top plate
• Cobra or King Cobra references only when the parts diagram confirms this exact non-CR top plate
• Commercial and industrial traffic-control lanes using the matching Cobra plate size

Features & Specifications

Also Known As / Related Part Numbers

• K99-COB-38TPT
• K99COB38TPT
• 99-COB-38TPT
• COB-38TPT
• 3/8 top plate 36 teeth
• Cobra 3/8 inch top plate

Technician Note

For K99-COB-38TPT, the safest match is the original part number and the specific LiftMaster traffic-control parts diagram. Do not rely on appearance alone, especially with Cobra, King Cobra, Stingray, Viper, and CR plate variations.

Before Ordering

• Match the original part number on the removed part or parts list
• Confirm the traffic spike family: Cobra, King Cobra, Stingray, Viper, Enforcer, or other LiftMaster system
• Check plate thickness, tooth count, CR designation, shaft length, bearing size, or sign type when applicable
• Inspect surrounding hardware for wear so the new part is not installed against damaged components
• Do not substitute a similar-looking part unless the manufacturer parts diagram supports it

Important Ordering Warnings

• Similar LiftMaster traffic spike parts may not be interchangeable
• CR, surface-mount, concealed, in-ground, and standard versions may use different hardware
• Traffic lanes should be blocked and secured before service
• Warning signs and safety instructions should remain visible and intact

Professional Advisory

Traffic spike systems can create severe tire damage and should be serviced only with the lane secured, the system locked out where applicable, and all warning signs and traffic-control procedures in place. Do not modify the system or remove required warning devices.

Product Questions & Answers

What is LiftMaster K99-COB-38TPT used for?

LiftMaster K99-COB-38TPT is used as a replacement 3/8 inch top plate with 36 teeth for the compatible traffic-control system or perimeter access assembly listed for this part.

Is K99-COB-38TPT interchangeable with similar Cobra, King Cobra, Stingray, or Viper parts?

Not automatically. Traffic spike parts can look similar but differ by plate thickness, tooth count, lane style, shaft length, pivot hardware, or system family. Match the original part number and parts diagram.

When should this 3/8 inch top plate with 36 teeth be replaced?

Replace it when the original part is bent, worn, missing, corroded, loose, cracked, seized, or no longer allows the traffic-control system to sit and operate correctly.

Does K99-COB-38TPT include all surrounding hardware?

Only assume the components named for this part are included. Reuse or order surrounding springs, brackets, anchors, rods, plates, bearings, clips, or sign hardware separately if the parts diagram shows them as separate items.

What should be checked before ordering K99-COB-38TPT?

Check the installed system family, original part number, plate thickness or shaft size when applicable, tooth count, CR or non-CR designation, and the LiftMaster parts diagram for the traffic-control unit.