Side Pin Tooth (SHORT) Part Number 9W8451 Family J450/60 Standard Pin Part No. 6Y2527 Standard Retainer Part No. 8E6359 Heavy Duty Pin Part No. 1140468 Heavy Duty Retainer Part No. 1073469 Pocket Size 45=4.5in Machine: CATERPILLAR 983,988,988B,225,229,E300,235,325,330, 345, 350 IF YOU CAN'T FIND WHAT YOU ARE LOOKING FOR, PLEASE CONTACT US. PRICE AND PART NUMBERS ARE USED FOR REFERENCE PURPOSES ONLY.