Cat Excavator Mirror parts list
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(Please verify compatibility with your specific Caterpillar model.) |
Mirror |
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4I8135 |
$36.24
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(Please verify compatibility with your specific Caterpillar model.) |
Mirror |
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122-5311 |
$43.00
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321C, 321D |
Mirror |
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162-3548 |
$32.00
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311D, 311C, 312D, 312C, 312DL, 312CL 315C, 315DL, 315CL, 318CL, 318CLN, 318DL, 318D2L 320C, 320D, 320DL, 320CL, 320DLN, 320DRR, 320DLRR, 320CLU, 320CU 322C, 322CL 325C, 325D, 325DL, 325CLL 330C, 330D, 330DL, 330CL, 330DMH, 330CMH 345C, 345D, 345DL, 3 |
Excavator Front Lower Glass |
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156-6473 |
$82.00
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307, 312, 312B L, 315, 315B L, 317, 320 L, 320B, 322B LN, 325B L, 330 L, 330B L, 345B L, 350, 375, 5080, 933C, 939C, D3C III, D4C III, D5C III, M312, M315, M318, M320 |
Joystick Handle |
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113-2531 |
$255.00
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Replacement mirrors for Caterpillar excavators, providing operators with improved visibility and safety on the job site. Available in two standard sizes — 6.25" x 12" (part 122-5311) and 7.25" x 14" (part 4I8135) — these mirrors are designed to fit a wide range of Cat excavator models across multiple generations.
Fits Models At A Glance
- 300 Series Excavators: 307, 311C, 311D, 312, 312B L, 312C, 312CL, 312D, 312DL, 315, 315B L, 315C, 315CL, 315DL, 317, 318CL, 318CLN, 318D2L, 318DL
- 320 Series Excavators: 320 L, 320B, 320C, 320CL, 320CLU, 320CU, 320D, 320DL, 320DLRR, 320DLN, 320DRR, 322B LN, 322C, 322CL
- 325–345 Series Excavators: 325B L, 325C, 325CLL, 325D, 325DL, 330 L, 330B L, 330C, 330CL, 330CMH, 330D, 330DL, 330DMH, 345B L, 345C, 345D, 345DL
- Large Frame Excavators: 350, 375
Key Notes
- Sizes Available: 6.25" x 12" and 7.25" x 14" to suit different cab configurations
- Part Numbers: 122-5311 (small) and 4I8135 (large)
- Compatibility: Verify fitment with your specific Caterpillar model and serial number before ordering
- Application: Exterior operator visibility mirrors for Cat excavator cabs
Why Choose Broken Tractor
- ✅ Cat excavator parts specialists serving contractors nationwide
- ✅ Multiple size options available for the right fit
- ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
Frequently Asked Questions
What size side mirror fits a Cat excavator?
Broken Tractor carries Cat excavator side mirrors in two sizes: a 6.25 inch by 12 inch mirror (part 122-5311) and a 7.25 inch by 14 inch mirror (part 4I8135). The two sizes suit different cab configurations, so the right one depends on your machine. Match the size and part number of your current mirror before ordering.
Which Caterpillar excavator model numbers do these mirrors fit?
Our Cat excavator mirrors are made to fit a wide range of models across several generations, including the 307, 311C, 312, 315C, 318DL, 320B, 320C, 320D, 322C, 325D, 330C, 330D, 345C, 345D, 350 and 375. Fitment can vary by model and serial number, so confirm with your specific machine before ordering.
Is there a rear view mirror for a Cat 321C or 321D excavator?
Yes, we carry a Caterpillar rear view mirror, part 162-3548, made specifically for the 321C and 321D excavators. Matching the 162-3548 part number to your existing mirror is the easiest way to make sure you get the right one.
How do I know if my Cat excavator needs the 122-5311 or the 4I8135 mirror?
Compare your current mirror to the two sizes: the 122-5311 measures 6.25 inch by 12 inch and the 4I8135 measures 7.25 inch by 14 inch. Because fitment depends on your Cat model, serial number and cab setup, check the part number on your old mirror if it is still readable. If you are unsure, call (800) 909-7060 and our parts team can help confirm the right mirror.
