Side Pin Tooth (SHORT) Part Number 1U3321 Family J350 Standard Pin Part No. 8E6358 Standard Retainer Part No. 8E6359 Heavy Duty Pin Part No. 1140538 Heavy Duty Retainer Part No. 1140359 Pocket Size 35=3.5in Machine: CATERPILLAR 966B, 977, 980, E180, E240, 213B, 215 THRU 229, 320,322,325,330 IF YOU CAN'T FIND WHAT YOU ARE LOOKING FOR, PLEASE CONTACT US. PRICE AND PART NUMBERS ARE USED FOR REFERENCE PURPOSES ONLY.