Caterpillar CAT S31 Earpiece Speaker Replacement (Ear Speaker Part)

If your Caterpillar CAT S31 call sound is very low, muffled, or you can’t hear the other person properly, the earpiece (receiver) speaker may be worn or blocked. This CAT S31 earpiece speaker replacement part is designed to restore clear audio during phone calls so you can hear conversations normally again.

Earpiece speaker faults often happen gradually. Sound may start getting quieter, become distorted, or cut in and out. Sometimes the issue is caused by dust or moisture near the top speaker grille, but if careful cleaning does not help, replacing the receiver speaker is a common fix.

CAT S31 ear speaker symptoms

• Very low call volume even when turned up
• Muffled or crackling sound during calls
• Call audio cuts in and out
• You can only hear calls on loudspeaker mode
• Sound improves when pressing near the top area (loose contact)

Earpiece receiver speaker replacement part

• Part type: Earpiece / receiver speaker (top call speaker)
• Use: Restores normal call audio (not the loudspeaker)
• Included: 1x earpiece speaker (as pictured)

Compatibility

Model: Caterpillar CAT S31. Please compare your original part with the listing images before ordering to ensure the same shape and contact layout.

Before you replace the earpiece speaker

• Clean the top speaker grille gently (dust can reduce volume)
• Disable Bluetooth so audio isn’t routing to a headset
• Test call volume in a quiet room and try a different SIM/network if needed

Installation notes

• Professional fitting recommended if you’re not used to phone repairs
• Use plastic pry tools to avoid damaging seals or clips
• Ensure the speaker sits flat and the contacts align properly

Why buy from OtusBargains

• Quality-checked replacement parts
• Fast dispatch from Ireland
• 30-Day Money-Back Guarantee for peace of mind
• Support if you need help choosing the right part

Related products

• Phone & Tablet Parts
• Tools & Accessories

Phone information

CAT S31 device specs (GSMArena):

https://www.gsmarena.com/cat_s31-8880.php

Note: If audio is still low after replacement, the issue may be corrosion, blocked mesh/grille, or a board-level audio fault. In that case, a technician can inspect and advise.