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Single Flange Bottom Roller for Cat D3, D4, 931, 933, 935 Series – 281-8339

SKU:
281-8339
FitsModel:
D3, D3B, D3C, D3G, D3K, D4B, D4C, D4G, D4K, 931, 931B, 931C, 933, 933C, 935B, 215, C175, C250, C300
ListDescription:
Single Flange Bottom Roller
Single flange track roller for Caterpillar D3B dozer, 238-7483
Part # 281-8339

Fits Models At A Glance:

Match the serial number prefix on your machine's plate to the list below.

Caterpillar D3 Series Dozers:

  • D3: Serial Number Prefix 79U
  • D3-LGP: Serial Number Prefix 6N
  • D3B: Serial Number Prefixes 23Y, 27Y, 2PC, 3YC
  • D3B-LGP: Serial Number Prefixes 24Y, 28Y, 5MC
  • D3C: Serial Number Prefixes 3RF, 4HJ, 4KS, 5KG, 6SL, 7JG
  • D3C-LGP: Serial Number Prefixes 1PJ, 5CJ, 5GS, 5ZG, 6PF, 7JF, 7XL, 8BF, 8DG
  • D3C-XL: Serial Number Prefixes 4TS, 9TS
  • D3G-LGP: Serial Number Prefixes BYR, CFF
  • D3G-XL: Serial Number Prefixes CFC, JMH
  • D3K-LGP: Serial Number LLL1–LLL102 only
  • D3K-XL: Serial Number FFF1–FFF117 only

Caterpillar D4 Series Dozers:

  • D4B: Serial Number Prefixes 1SG, 2XF
  • D4C: Serial Number Prefixes 1RJ, 2CJ, 4LS, 6BS, 6YL, 7KG, 7SL
  • D4C-LGP: Serial Number Prefix 9BG
  • D4C-XL: Serial Number Prefixes 1FW, 8CS
  • D4G-LGP: Serial Number Prefixes FDC, TLX
  • D4G-XL: Serial Number Prefixes CFN, HYD
  • D4K-LGP: Serial Number RRR1–RRR131 only
  • D4K-XL: Serial Number MMM1–MMM123 only

Caterpillar Crawler Loaders:

  • 931: Serial Number Prefix 78U
  • 931-LGP: Serial Number Prefix 10N
  • 931B: Serial Number Prefixes 25Y, 29Y, 4SC
  • 931B-LGP: Serial Number Prefixes 26Y, 30Y, 6EC
  • 931C: Serial Number Prefixes 2BJ, 6AJ, 7HF, 9AG
  • 931C-LGP: Serial Number Prefixes 2AK, 5LG, 6RF, 8AF
  • 933: Serial Number Prefix 8FL
  • 933-LGP: Serial Number Prefix 9EL
  • 933C: Serial Number Prefixes 4S, 5JS
  • 935B: Serial Number Prefix 3DF
  • 935C: Serial Number Prefixes 5DJ, 8CF

Caterpillar Excavators:

  • 215: Serial Number 14Z1–14Z760, 57Y1–57Y2030, and prefix 96L

Key Notes:

  • Part Numbers: 281-8339 (2818339), 6S-3607 (6S3607), 238-7483 (2387483), 275-3579 (2753579), 3T-4352 (3T4352)
  • Type: Single flange track bottom roller
  • Weight: 48.00 lbs (21.77 kg)
  • Serial Number Notes: The D3K and D4K fit early serial ranges only — D3K-LGP LLL1–LLL102, D3K-XL FFF1–FFF117, D4K-LGP RRR1–RRR131 and D4K-XL MMM1–MMM123. Later K Series machines use a different roller.
  • Application: Supports the machine's weight on the track chain and guides the chain along the track frame.
  • Condition: Aftermarket replacement part

Common Use Case or Symptoms: Use when a bottom roller is leaking oil, seized or not turning, worn flat or worn through the flange — a bad roller wears the track chain links quickly.

Why Choose Broken Tractor:

  • ✅ Serial Number Prefixes Listed Model by Model – match your plate before you order
  • ✅ Replaces Five Cat Part Numbers – 281-8339, 6S-3607, 238-7483, 275-3579 and 3T-4352
  • ✅ Fast Shipping from a U.S.-Based Team – ready to ship from our U.S. warehouses
$203.00

Shipping calculated at checkout. If any item in your order is temporarily unavailable, we'll contact you to arrange a back-order or refund — whichever you prefer.

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Product: Category: Brand: Head Title: Single Flange Bottom Roller | Broken Tractor | 281-8339