5900506 - ZT3500, 24HP Briggs & Stratton w/ 48" Mower (ZT3500B2448)

5900521 - ZT3500, 27HP Briggs & Stratton w/ 48" Mower (ZT3500B2748)

5901274 - ZT3500, 24HP Briggs & Stratton w/ 48" Mower (ZT3500B2448)

5901408 - ZT3500, 25HP Briggs & Stratton w/ 48" Mower (ZT3500B2548)