Exhaust bellows, lower 3″, for MerCruiser

This exhaust bellows is a lower, flexible connection for the exhaust system on selected Mercury MerCruiser inboard engines. The variant has a nominal inner diameter of 3″ and replaces original reference 32-90949T as well as the former reference 32-90949.

The bellows is made of rubber and designed as a short, cylindrical exhaust hose. The flexible construction connects the exhaust ports and absorbs the necessary movement between the components. The product length is approximately 102 mm, while the nominal inner diameter is 3″, corresponding to 76–76.2 mm.

The bellows is mounted over the exhaust ports and secured with suitable hose clamps. The choice and number of hose clamps depend on the specific engine installation, and hose clamps are not documented as included.

Compatible engine models

Documented MerCruiser applications include 120 (2.5 L) and 140 (3.0 L) from serial number 6229718; 170/190 from 6916779; 185 from 6330183 to A331454; 185/205 from A331455; 200/230/260 from 6218462; 228 from 4765100 to 5170008; 250 from 4768000 to 4908849; 260 from 4908850 to 6218461; 330 from 6083145; 470, 170 HP, from 4208730 to 5520114; 485 from 5685384; 488 from 6170297 as well as 898, 198 HP, from serial number 4762210. Compatibility depends on the engine serial number and exhaust configuration.

Always check engine/drive model, serial number, inner diameter, and original part number before purchasing.

Replaces OEM numbers

Mercury/MerCruiser 32-90949T and the former reference 32-90949. Documented aftermarket cross-references include CEF 500511K, Sierra 18-2761, GLM 89090, and Mallory 9-72809. Additional cross-references are Imnasa 23972809 and Super Marine SAEET83.

Related variants

Related exhaust bellows include part no. 43.932.03 for Stern Drive exhaust, 43.932.04 for lower 4″ exhaust, 43.932.05 for upper 4″ exhaust, 43.932.11 for 170/488 HP, and 43.932.14 for Bravo exhaust. These are separate variants with different original references and must not be used as specifications for this 3″ variant.

Lower exhaust bellows for selected MerCruiser engines
Nominal inner diameter: 3″ / 76–76.2 mm
Length: approx. 102 mm
Flexible rubber construction
Mounted over exhaust ports with hose clamps
Replaces OEM 32-90949T and 32-90949
Sales unit: 1 pc.