Exhaust Diverters - Hardin Marine

These Hardin Marine full time thru-prop and thru-hull diverters are a popular exhaust option for a silencing diverter system. This fixed device allows for a muffled sound that is suited for pleasure cruising and the open water. When matched with the extremely popular #410-284401 slip in mufflers you can create a quiet and quick to install system that meets most noise laws within the 50 states on any Stock 502 EFI or smaller production motor.

Our system enables the exhaust to exit through the transom and the prop at the same time by combining a silencer tip with the housing of a diverter (no electronics). At lower RPM's most of the exhaust will be heard through the exhaust tips. As RPM's increase more exhaust is forced through the Y-pipe, allowing optimum flow and noise reduction.

Fits Mercruiser 502, 454, 350, and 305 engines. SOLD AS A PAIR. INCLUDES DIVERTERS ONLY! ASSEMBLED PHOTOS ARE SHOWN AS EXAMPLES ONLY. HOSE, CLAMPS AND TIPS SOLD SEPARATELY. SEE RELATED PARTS

Single Engine "Silent Choice" Exhaust Cut-Out Kit - Captain's Call Replacement

Need the complete solution? The Exhaust Cut-Out Kit is your answer! Includes Tips, Diverters, Actuator, Hose and Clamps. Standard Kit includes two 8" long sections of 4" exhaust hose and straight cut tips. These kits are designed to be fitted in stock bravo exhaust locations. See this measurement sheet for more info. If you must place tips in a different location more hose and angle bends may be required. Call us if you need any assistance. Angle cut tips and longer hose available by special order.

"Sound-Selection" Air Activated 4" Exhaust Diverter System - "Captain's Call" Replacement
Single Engine Standard Exit System For Small & Big Block Chevy

At last you can have the very best of both worlds. You can go from marina quiet thru-prop exhaust to the open water roar of thru-transom exhaust. With no cutting or modifications, these highly polished stainless steel exhaust diverters install simply to both stock and aftermarket exhaust systems. But that's only the half of it. What makes the Hardin Marine Sound-Select Diverter America's No.1 choice is it is air activated - yes air activated - the same way the factory original guy's do it. You ask why air? Reliability and safety. Reliability because we DO NOT retro-fit electrical solenoids as marine exhaust components. Electric solenoids produce a continuous draw of electricity while generating possible sparks and heat in an enclosed engine compartment. An air operated system is driven by a remote mount panel providing none of the side effects electrically operated systems have. So if only the best will do for your boat do it the way the factory intended to do it - Choose the Hardin Marine Sound-Select Exhaust Diverter!

Each Sound-Select Diverter system is constructed of aerospace stainless components. The systems are sold complete with 2 diverters, and 1 remote operation panel. Exhaust tips sold separately.

These kits are designed to be fitted in stock bravo exhaust locations. See this measurement sheet for more info. If you must place tips in a different location more hose and angle bends may be required. Call us if you need any assistance. Note: This is for Mercruiser Bravo Applications Only! Will not fit Volvo/OMC applications.

These diverters will fit Bravo and Alpha applications 1987 and up they will not fit the 8.1 engines, OMC or Volvos.

The Mercury 350 dry joint exhaust will not work with the Hardin diverter.
Corsa has a set part number 270-61000 for standard non riser spacers. If there is space, we need to know if it is 3" or 6" and Corsa can build a custom set.

Twin Engine "Sound-Selection" Air Activated Exhaust Diverter System
Twin Engine Standard Exit System For Small & Big Block Chevy

At last you can have the very best of both worlds.  You can go from marina quiet thru-prop exhaust to the open water roar of thru transom exhaust.  With no cutting or modifications these highly polished stainless steel exhaust diverters install simply to both stock and aftermarket exhaust systems.  But that's only the half of it. What makes the Hardin Marine Sound-Select Diverter America's No.1 choice is it is air activated - yes air activated - the same way the factory original guy's do it. You ask why air?  Reliability and safety.  Reliability because weDO NOT retro-fit electrical solenoids as marine exhaust components.  Electric solenoids produce a continuous draw of electricity while generating possible sparks and heat in an enclosed engine compartment.  An air operated system is driven by a remote mount panel providing none of the side effects electrically operated systems have.  So if only the best will do for your boat do it the way the factory intended to do it - Choose the Hardin Marine Sound-Select Exhaust Diverter!

Each Sound-Select Diverter system is constructed of aerospace stainless components. The systems are sold complete with 4 diverters, and 1 remote operation panel. Switch and exhaust tips sold separately.

These diverters will fit Bravo and Alpha applications 1987 and up they will not fit the 8.1 engines, OMC or Volvos.

The Mercury 350 dry joint exhaust will not work with the Hardin diverter.
Corsa has a set part number 270-61000 for standard non riser spacers. If there is space, we need to know if it is 3" or 6" and Corsa can build a custom set.

Single Engine "Sound-Selection" Air Activated Below Platform/Low Port Exhaust Diverter System - Black

At last you can have the very best of both worlds. You can go from marina quiet thru-prop exhaust to the open water roar of thru-transom exhaust. With no cutting or modifications these highly polished stainless steel exhaust diverters install simply to both stock and aftermarket exhaust systems.  But that's only the half of it. What makes the Hardin Marine Sound-Select Diverter America's No.1 choice is it is air activated - yes air activated - the same way the factory original guy's do it. You ask why air? Reliability and safety. Reliability because we DO NOT retrofit electrical solenoids as marine exhaust components. Electric solenoids produce a continuous draw of electricity while generating possible sparks and heat in an enclosed engine compartment.  An air operated system is driven by a remote mount panel providing none of the side effects electrically operated systems have. So if only the best will do for your boat do it the way the factory intended to do it - Choose the Hardin Marine Sound-Select Exhaust Diverter!

Late model boat styling with integrated swim platforms have brought the need to develop a system providing the flexibility to lower the exhaust exit while still working in harmony with the factory Y-pipe.

Each Sound-Select Diverter system is constructed of aerospace stainless components. The systems are sold complete with 2 diverters, and 1 remote operation panel. Switch and exhaust tips are sold separately.

These diverters will fit Bravo and Alpha applications 1987 and up they will not fit the 8.1 engines, OMC or Volvos.

The Mercury 350 dry joint exhaust will not work with the Hardin diverter.
Corsa has a set part number 270-61000 for standard non riser spacers. If there is space, we need to know if it is 3" or 6" and Corsa can build a custom set.

Replacement Ram only for Hardin Marine Diverter Systems

Hose Kit For Exhaust Diverters

This kit is used to connect your exhaust diverters to your exhaust tips.  The kit consists of 2 pieces of pre-cut 8" exhaust hose and 4 stainless steel hose clamps For twin engine installations order 2 kits.

Single Panel Pneumatic Pump Kit

This unit includes consists of the air pump, relay and valve mounted on a stainless steel bracket.  The kit also includes PVC air lines and all necessary fittings. This unit is a direct replacement for air pumps used on Hardin Marine air actuated diverters as well as a replacement air pump for CMI and other manufacturers air actuated mufflers.

Master Rebuild Kit for Hardin Exhaust Diverters

This kit is used to replace worn out components on your Hardin Marine Diverter kit. The master kit includes replacement O-Rings, flappers, pivot shafts and bolts/nuts:

• (2) Diverter Flapper
• (2) Pivot Shaft
• (4) O-Rings
• (6) 10-32 x 5/8" Bolts
• (6) 10-32 Nylock Nuts

Standard Rebuild Kit for Hardin Exhaust Diverters

This kit is used to replace worn out components on your Hardin Marine Diverter kit. The basing kit includes replacement O-Rings and bolts/nuts:

• (4) O-Rings
• (6) 10-32 x 5/8" Bolts
• (6) 10-32 Nylock Nuts

Exhaust Bellow Lower 4" replaces MerCruiser part # 32-14358

Fits 700-51140 or 700-51145. 4” Elbow to 4” Y-Pipe