Track Link Pin Seal for Cat D3B, D4, D4H, D5M, D5N, D6K, 963, 973 & More – 7K9203

Fits Models At A Glance:

• Caterpillar Dozers: D3B (2PC), D3C (7JF), D4 (AX9, EJK, FRP, H3C, JPH, K3G, KWM, MTT, RKR, RLT, S4A, STT), D4H (2AC, 3AC, 4NK, 8PB, 8PJ, 9DB), D4H III (9GJ), D5M (3CR, 3DR, 4BR, 4JS, 5ES, 5FS, 6AS, 6GN), D5N (AGG, AKD, CFH, CKT), D6K (DHA, FBH, HMG, MP7, NCF, ZLJ), D6K2 (7P6, DFR, EL7, JTR, MGM, MXK, RPR, RST, WMR)
• Caterpillar Track Skidders: 517 (5WW, 6PW)
• Caterpillar Track Loaders: 963 (06Z, 11Z, 18Z, 21Z, 29S, 48Z), 973 (86G), 973C (3RZ, BCP, LDX)

Key Notes:

• Part Numbers: 7K9203, 7K-9203, 5P0093, 9D6583
• Weight: 0.10 lbs (0.05 kg)
• Dimensions: 2-1/2 in OD × 0.2 in thick (63 mm × 5 mm)
• Pin Diameter: 2 in (50.8 mm) shaft diameter
• Type: Lip-type pin seal — seals the end of the track link master pin on sealed and lubricated track (SALT) undercarriage systems
• Application: Retains grease inside the track link pin bore and excludes mud, water, and abrasive debris from the pin-bushing interface; a key wear item on SALT undercarriage systems

Common Use Case or Symptoms:
Use when track pins show accelerated wear, grease purges from the link joints, or contamination causes stiff track movement — failed pin seals allow lubricant loss and dirt ingress that rapidly wear pins and bushings, shortening undercarriage life.

Why Choose Broken Tractor:
✅ Broad Cat Equipment Coverage — fits dozers from D3B through D6K2, plus 963/973 track loaders and 517 skidders, all in one seal design
✅ Fast Shipping from a U.S.-Based Team — in-stock and ready to ship from our U.S. warehouses