Piston Ring Kit for Caterpillar CAT Engine C3.3 C3.3BPiston Ring Kit for Caterpillar CAT Engine C3. 3 C3. 3B The Piston Ring kit of this listing was confirmed according to the nameplate on the sedond picture, if yours is different , please kindly provide us teh picture of your nameplate so that we can confirm your type,thank you ! Application: Caterpillar CAT Engine: C3. 3, C3. 3B Content: 4 Pistons STD 4 Piston Pins 8 Snap Rings 4 Rod Bushings Set Rings For 4 Pistons STD