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CAT 320 Undercarriage Parts
Shop high-quality 320 undercarriage parts for Caterpillar equipment. This comprehensive 320 excavator undercarriage parts hub helps you select the correct configuration for your machine. Because Caterpillar manufactured the 320 with multiple setups depending on the application and year of manufacture, ensuring you have the right 320 track chains and 320 track rollers is critical for maintaining performance.
To ensure you get the correct parts, please select your machine's serial number prefix from the guide below. Whether you are pricing out 320 undercarriage rebuild costs or need immediate replacements for worn 320 idlers, every part we sell is backed by our Exact Fit Guarantee and same-day shipping on most orders.
Select Your Machine Configuration
1st Gen — early serial range
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Serial Prefixes: 2DL, 3RK, 3XM, 4ZJ, 7GJ, 7WK, 8LK
1st Gen — later serial range
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Serial Prefixes: 2DL, 4ZJ
2nd Gen — 7 Roller Frame
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Serial Prefixes: HEX, MYK
2nd Gen — 8 Roller Frame
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Serial Prefixes: BR6, DYT, HEX, MYK
2nd Gen
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Serial Prefixes: ELW, FMS, KFE, XAR, YBP, YCP, ZBN, ZDK
2nd Gen — NMC
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Serial Prefixes: NMC
