Mercury Outboard 300 350 1960 Mark 35 Reverse Lock Locking Cam 25138 29823 25140 Carburetor this is the piece that

this is the piece that is under the recoil housing that contacts the flywheel

All other bolts as pictured

they might be fine but this is ultimately up to your discretion

From a AQ-280 / AQ 280-DP (Which indicates 875183 but is commonly stamped 850304 which is the same for AQ 290 & AQ 275 units)

Shift Lever Rod: 318589

Mercury Outboard 300 350 1960 Mark 35 Reverse Lock Locking Cam 25138 29823 25140 Carburetor this is the piece thatThis is From a 1960 Kiekhaefer Mercury 300 E 4 cylinder Thunderbolt (serial # 127258) Item Condition: Very Good Condition Please Inspect Pictures for condition Part#'s Reverse Lock Push Rod (short shaft): A 25190 Pin: A 17 24887 Spring: A 24 15122 Lever: A 25140 Lower Reverse Locking Cam: A 25138 Upper Reverse Locking Cam: A 29823 Other Related Models: Mark 35AM, Mark 35AE, Mercury 300M, Mercury 300E, Mercury 350M, Mercury 350E, Mercury 350M 1,