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Cat Excavator Muffler

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Cat Excavator Muffler parts list
Image Fits Model Description Part # Price Product Details
Muffler for Caterpillar E200B Excavator with S6KT Engine 1R7158 See Details E200B Muffler 1R7158
$195.00
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Muffler Assembly for Caterpillar 215B Excavator 4P4010 See Details 215B Muffler 4P4010
$221.00
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Muffler Assembly for Caterpillar 225 Excavator 1W2572 See Details 225 Muffler 1W2572
$149.00
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Muffler Assembly for Caterpillar 235 Excavator 2W3428 See Details 235 Muffler 2W3428
$258.00
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Muffler Assembly for Caterpillar 235B, 235C Excavator 4W3632 See Details 235B, 235C Muffler 4W3632
$369.00
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Muffler Assembly for Caterpillar 245B Excavator 4P1463 See Details 245B Muffler 4P1463
$460.00
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Cat 307 mini excavator muffler silencer — 1172362 See Details 307, E70B Muffler 1172362
$129.00
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Caterpillar Hydraulic 311, 312, E120B Excavator Muffler -- 5I7914 See Details 311, 312, E120B Muffler 5I7914
$154.00
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Caterpillar Excavator 311B, 312B, 312BL, E311B, E312B, E311, E312, 3064, S4KT Muffler -- 5I7935 See Details 311B, 312B, 312BL, E311B, E312B, E311, E312, 3064, S4KT Muffler 5I7935
$165.00
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Muffler for Caterpillar 311C, 312C L Excavator, Early Serial 2128507 See Details 311C, 312C L Muffler 2128507
$214.00
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Muffler for Cat 311C, 312C, 312D, 313D, 314D Excavator 2128491 See Details 311C, 311D LRR, 312C, 312C L, 312D, 312D L, 313D, 314D CR, 314D LCR Muffler 2128491
$201.00
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Muffler for Caterpillar 315C, 318B Excavator with 3046 Engine 2870206 See Details 315C, 318B Muffler 2870206
$195.00
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Muffler for Caterpillar 320B Excavator with 3066 Engine 2724674 See Details 320B Muffler 2724674
$241.00
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Cat 320B excavator muffler assembly — 1189906 See Details 320B, 320B L, 320B N, 320B S Muffler 1189906
$168.00
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Muffler for Cat 318C, 319C, 320C Excavator with 3066 Engine 2666251 See Details 318C, 319C, 320C, 320C FM, 320C L Muffler 2666251
$303.00
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Muffler for Caterpillar 320C, 321C Excavator with 3066 Engine 2666250 See Details 320C, 321C Muffler 2666250
$252.00
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Muffler for Caterpillar 320C, 320C FM Excavator 2666252 See Details 320C, 320C FM Muffler 2666252
$299.00
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Muffler for Caterpillar 320C, 320D, 323D L, 323D LN Excavator 3244157 See Details 320C, 320D, 323D L, 323D LN Muffler 3244157
$354.00
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Muffler for Caterpillar 320D, 321D LCR, 323D LN Excavator 2941762 See Details 320D, 320D FM, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D LN Muffler 2941762
$433.00
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Muffler for Cat 320D, 321D LCR, 323D Excavator, C6.4 Engine 3244156 See Details 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA Muffler 3244156
$360.00
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Muffler Assembly for Cat 322B, 322C, 325B, 325C & M325C MH Excavators 1099323 See Details 322B L, 322B LN, 322C, 322C FM, 325B L, 325C, 325C L, 325C FM Muffler 1099323
$312.00
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Muffler for Cat 324D, 325D, 326D, 328D, 329D Excavator 2331254 See Details 324D, 324D FM, 324D FM LL, 324D L, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L Muffler 2331254
$570.00
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Muffler for Cat 324D, 325D, 329D and M325D Material Handler 2553052 See Details 324D L, 324D LN, 325D, 325D L, 329D L, 329D LN, M325D L MH, M325D MH Muffler 2553052
$313.00
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Cat 330B L excavator muffler — 1099463 See Details 330B L, 330B LN Muffler 1099463
$288.00
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Muffler for Cat 330C, 330D, 336D, 340D Excavator with C9 Engine 2056642 See Details 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D MH, 336D, 336D L, 336D2, 336D2 L, 340D L, 340D2 L, M330D Muffler 2056642
$497.00
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Muffler for Cat 345C, 345D, 349D Excavator with C13 Engine 2396580 See Details 345C, 345C L, 345C MH, 345D L VG, 349D, 349D L Muffler 2396580
$372.00
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Cat 345B excavator muffler — 1398723 See Details 345B, 345B L Muffler 1398723
$365.00
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Cat 345B II excavator muffler assembly — 1968203 See Details 345B II, 345B II MH, W345B II Muffler 1968203
$448.00
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Cat 375 excavator muffler — 1023927 See Details 375, 375 L, 5080 Muffler 1023927
$639.00
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Muffler for Cat 345C, 345D L, 349D L Excavator, C13 Engine 2666213 See Details 345C, 345C MH, 345D L, 349D L, W345C MH Muffler 2666213
$487.00
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Muffler for Caterpillar 330D, 336D, 336D2 Excavator 3054672 See Details 330D, 330D L, 330D LN, 330D MH, 336D L, 336D LN, 336D2, M330D Muffler 3054672
$525.00
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Muffler for Caterpillar 385C, 390D Excavator with C18 Engine 3244083 See Details 385C, 390D Muffler 3244083
$660.00
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Muffler for Caterpillar D7G, D7H, D7R, D8N Dozer and 572R Pipelayer 1W9229 See Details D7G, D7G2, D7H, D7R, D7R II, D8N, 572R, 572R II, 235B Muffler 1W9229
$195.00
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Replacement exhaust mufflers for Caterpillar compact and mid-size excavators, covering direct-fit units for the 311, 312, and E-series machines running the 3064 and S4KT engines across multiple build generations.

Fits Models At A Glance

  • 311 Series: 311, 311B, E311, E311B
  • 312 Series: 312, 312B, 312BL, E312, E312B, E120B
  • Engine References: 3064, S4KT

Key Notes

  • Application: Direct-replacement exhaust mufflers for Caterpillar compact excavators
  • Part Coverage: Two OEM-reference part numbers covering early and B-series variants
  • Engine Fitment: Designed around 3064 and S4KT engine configurations common to this excavator range
  • Compatibility: Covers both standard and long-undercarriage (L) excavator builds where applicable

Why Choose Broken Tractor

  • ✅ Excavator-specific parts sourced for accurate fitment
  • ✅ Knowledgeable staff ready to confirm part compatibility
  • ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH

Frequently Asked Questions

What Cat excavator mufflers does Broken Tractor carry?

We carry replacement mufflers and muffler assemblies for a wide range of Caterpillar excavators, from the 307 and E70B mini excavators up to the 385C and 390D. Coverage includes the 311, 312, 320, 325, 330, 345 and 349 families, plus older models like the 215B, 225, 235 and 245B. Many listings name the engine they suit, such as the 3064, 3066, C6.4, C9, C13 and C18, so you can narrow down the right fit.

What muffler fits a Cat 320D excavator?

Broken Tractor offers three mufflers listed for the Cat 320D: part numbers 3244156, 2941762 and 3244157. The 3244156 is listed for 320D machines with the C6.4 engine and also covers the 320D FM, 320D L, 320D LN, 320D LRR and 320D RR, and 2941762 covers the same 320D variants. The 3244157 fits the 320D along with the 320C, 323D L and 323D LN. Since more than one muffler fits the 320D, match the part number from your old muffler or confirm with the parts team using your serial number.

Which Cat 320 excavator muffler do I need for a 320B or 320C?

The correct muffler depends on the series and engine of your Cat 320. For the 320B we carry 1189906, which fits the 320B, 320B L, 320B N and 320B S, and 2724674 for the 320B with the 3066 engine. For the 320C, options include 2666250 and 2666251 for machines with the 3066 engine, 2666252 for the 320C and 320C FM, and 3244157. To be sure you order the right one, match your old part number or call (800) 909-7060.

What muffler fits a Cat 330D excavator?

We carry two mufflers listed for the Cat 330D: 3054672 and 2056642. The 3054672 fits the 330D, 330D L, 330D LN, 330D MH and M330D, plus the 336D L, 336D LN and 336D2. The 2056642 is listed for machines with the C9 engine and covers the 330C, 330D, 330D FM, 330D L, 330D MH, 336D and 340D L. Fitment can vary by engine and serial number, so compare part numbers before ordering.

Which muffler fits a Cat 311 or 312 excavator?

It depends on the generation of your machine. The 5I7914 fits the original 311 and 312, while the 5I7935 fits the 311B, 312B, 312BL, E311, E311B, E312 and E312B with the 3064 or S4KT engine. For C and D series machines, the 2128491 covers the 311C, 312C, 312C L, 312D, 312D L, 313D and 314D CR, and the 2128507 is listed for early serial 311C and 312C L excavators. Check your serial number to choose between the early and later C series options.

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Product: Category: Cat Excavator Muffler Brand: Head Title: Cat Excavator Mufflers 311 312 E120B | Broken Tractor