Rehlko 24 523 07 Engine Blocks & Internals Click to zoom

Kohler 24 523 07 Long Block for ECV730, ECV740 & ECV749 Command PRO EFI Vertical Engines (Genuine Rehlko)

MPN 24 523 07

In stockEngine Blocks & Internals

Overview

The Kohler 24 523 07 is a genuine Kohler (now Rehlko) long block for the ECV730, ECV740 and ECV749 Command PRO EFI vertical-shaft V-twin engines, and it is also listed for FCV740 specs. A long block is the assembled core of the engine, used to bring a worn or damaged engine back to factory condition while keeping the equipment's original engine spec and mounting. Dealer parts data tie it to 56 engine specs used on Exmark, Toro, John Deere, Ariens, Husqvarna, Bad Boy and Wright mowers. Kohler Engines is now called Rehlko; the part number is unchanged.

Key features

  • Genuine Kohler/Rehlko service long block, part number 24 523 07
  • Covers the ECV730, ECV740 and ECV749 family plus FCV740 specs
  • New factory assembly – not a rebuilt or remanufactured block
  • Shipping weight 60 lb; carton approx. 24 x 22 x 20 in

Fits

  • Engines/Models: ECV730-3011, -3017, -3031, -3032, -3044, -3045, -3051 (Exmark); ECV730-3013, -3029 (Ariens); ECV730-3025, -3043 (Toro); ECV740-3011, -3019, -3025, -3041, -3042 (John Deere); ECV740-3012, -3018, -3038, -3040, -3059, -3065 (Exmark); ECV740-3017 (Husqvarna); ECV740-3022 (Wright); ECV740-3024, -3035 (Ariens); ECV740-3050, -3063 (Toro); ECV749-3005 (basic); ECV749-3011, -3014, -3046, -3064 (Exmark); ECV749-3013, -3041, -3063 (Ariens); ECV749-3015, -3049 (Bad Boy); ECV749-3020, -3028, -3047, -3048 (John Deere); ECV749-3029 (Husqvarna); ECV749-3069, -3071 (Toro); FCV740-3011, -3012 (John Deere); plus further ECV740 and ECV749 specs
  • Typical equipment: commercial and residential zero-turn and riding mowers powered by Kohler Command PRO EFI vertical V-twins
  • How to confirm fitment: find the model, spec and serial number on the engine's identification decal (on the blower housing) and check that 24 523 07 is listed as the long block for your spec. Kohler changes some parts by serial number, so send us those three numbers and our team will confirm fit and what transfers from your old engine before it ships.

Specifications

Brand Rehlko (formerly Kohler Engines)
MPN 24 523 07
Also listed as 2452307; 24-523-07; KH-24-523-07
UPC 885612233011
Part type Long block (engine block assembly)
Engine family Command PRO EFI vertical V-twin: ECV730, ECV740, ECV749; also FCV740
Replaces (dealer listing) 24 522 464
Shipping weight 60 lb
Carton size 24 x 22 x 20 in
Country of origin USA
Condition New, genuine OEM

Frequently asked questions

Which engines use the Kohler 24 523 07 long block?

It is listed for ECV730, ECV740 and ECV749 Command PRO EFI vertical engines, plus FCV740-3011 and -3012. Dealer parts data show 56 specs in all, built for Exmark, Toro, John Deere, Ariens, Husqvarna, Bad Boy and Wright mowers.

What is a long block?

It is the assembled core of the engine that you fit with the external components from your old engine. Ask us to confirm exactly what is included and what transfers for your spec before you order.

What part number does 24 523 07 replace?

Dealer listings show it replacing the earlier long block 24 522 464. If your parts list shows a different number, send it to us and we will check the supersession.

Is this a genuine Kohler part?

Yes. It is a new, genuine Kohler/Rehlko part under Kohler's own part number. Kohler Engines now operates as Rehlko, and the part number did not change.

How do I confirm it fits my engine?

Read the model, spec and serial number on your engine's identification decal (for example ECV740-3012) and send them to us. Our team will check the Kohler parts list for your exact spec.

How heavy is it?

The long block ships at about 60 lb in a carton of roughly 24 x 22 x 20 in.