Overview
Genuine Briggs & Stratton part number 691613 — Exhaust Manifold Gasket.
Briggs & Stratton Exhaust Manifold Gasket Briggs & Stratton 691613 Exhaust Gasket Genuine Briggs & Stratton Part New OEM Part Replaces Old Briggs # 805024, 691613, 67897
What it fits
Verified against the Briggs & Stratton parts documentation Carpet Cleaners Warehouse holds for the engines fitted to HydraMaster truckmounts:
- HydraMaster Boxxer 318 — engine 356447-1239-G1, listed as GASKET, Exhaust, reference 883, in the Carburetor Overhaul Kit, Engine & Valve Set group
Briggs & Stratton build the same part into many engines. This list is what we can verify from the parts manuals we hold — it is not a statement that the part fits nothing else.
Identifying your engine
Briggs & Stratton engines are identified by model, type and code, stamped or printed on a label on the engine itself. The same HydraMaster machine model has been built with more than one engine over the years, and parts changed at specific code dates within a single engine model.
If you are ordering for a machine you have not worked on before, read the engine label rather than assuming from the truckmount model. It takes a minute and it is the difference between the right part and a return.
Fitting advice
Never re-use an exhaust gasket, and replace every one you disturb rather than only the one that was leaking.
Check the flange faces for distortion while they are apart — a warped face leaks through a new gasket.
Exhaust fasteners work loose with heat cycling. Re-check them after the first few hours of running.
An exhaust leak inside a van is a safety matter before it is a performance one. Do not run a machine with a known leak.
Frequently asked questions
Is this a genuine Briggs & Stratton part?
Yes — supplied under Briggs & Stratton part number 691613.
Which machine is it for?
HydraMaster Boxxer 318, from the parts documentation above. Check your engine label if you are unsure.
How many does my engine take?
Quantities vary by engine and by assembly. Tell us the engine numbers and we will check the parts list rather than have you order one and find you needed two.
What else should I replace at the same time?
Ask us. Once an assembly is apart, the gaskets, seals and fasteners around the part you came for are the cheap half of the job — and the half that brings the machine back if it is skipped.
Send us the model, type and code numbers from your engine label and we will confirm the correct part, the quantity, and anything else worth doing while you are in there.
