Kohler CV742-3051 25 HP Command PRO Vertical Engine, 1-1/8" x 4-5/16" Shaft, Fuel Pump, HD Air Cleaner, Oil Cooler

The Kohler CV742-3051 (full spec number PA-CV742-3051) is a 25 HP, 747cc Command PRO V-twin vertical-shaft engine with a 1-1/8" x 4-5/16" crankshaft (often listed as 4-3/8"), electric start, 15-amp charging, fuel pump, heavy-duty canister air cleaner and integrated oil cooler. It is a go-to replacement for commercial zero-turn and stand-on mowers that originally shipped with a CV742 Command PRO, and it supersedes older specs PA-CV742-3017 and PA-CV742-3043.

Kohler Engines now operates under the name Rehlko. This is the same genuine Kohler Command PRO CV742-3051 engine; new units may carry Rehlko branding.

Why buy the CV742-3051 from RFQQQ

• $1,799 with free shipping to the lower 48 — no freight add-on at checkout
• Brand new, genuine Kohler OEM engine with the full 3-year manufacturer engine warranty
• Pro accounts, net terms and POs available for dealers and landscape contractors
• Real people on the phone at (646) 666-7225 to confirm fitment before you order

Key features

• 25 HP Command PRO OHV V-twin, 747cc, sleeved bores for long commercial life
• Vertical crankshaft, 1-1/8" diameter x 4-5/16" length
• Heavy-duty canister air cleaner for dusty commercial mowing
• Integrated oil cooler for lower operating temperatures and longer oil life
• Fuel pump, electric start, 15-amp regulated charging system
• Oil capacity 2.0 qt (1.9 L); Rehlko/Kohler 10W-40 synthetic recommended (OCK-RKC-10440)

Fitment and replacement notes

• Supersedes PA-CV742-3017 and PA-CV742-3043.
• Replacing a PA-CV742-3037? A wiring harness jumper (Kohler 24-176-224-S) is required.
• Muffler is not included — reuse your existing exhaust.
• Before ordering, match crank diameter and length, mounting bolt pattern, PTO/clutch, and wiring connector to your current engine tag. Not sure? Call us with your engine model and spec number and we'll confirm.

Frequently asked questions

Is the CV742-3051 a Kohler or a Rehlko engine?

Both. Kohler Engines rebranded to Rehlko; the part number, design and factory are unchanged.

How much does shipping cost?

Nothing. Standard shipping is free to the lower 48 states and DC. Expedited options are available at checkout.

What is the shaft size?

1-1/8" diameter x 4-5/16" long vertical crankshaft. Some retailers round this to 4-3/8".

What warranty comes with it?

3-year Kohler engine manufacturer warranty.

What does the CV742-3051 replace?

It supersedes PA-CV742-3017 and PA-CV742-3043, and can replace PA-CV742-3037 with harness jumper 24-176-224-S.

How much does it weigh?

Approximately 110 lb dry; about 151 lb boxed for shipping.