Tackling boat maintenance usually starts with a simple question: what exactly needs attention? The generator that powers the cabin or the outboard that pushes you across the water. These two marine replacement parts answer different jobs, yet both are bought by the same kind of shopper: someone who wants a complete, ready-to-use parts bundle without running around town. The price spread is wide-roughly $480 separates the two-but the decision hinges more on engine type than budget.
Quick Verdict
If your priority is a complete generator service bundle, the Westerbeke exhaust elbow lot has the major parts in one box. If your priority is a focused outboard cooling repair, the Candy Marine water pump kit has the impeller and pump internals for the Johnson/Evinrude models listed. Neither is objectively better; the right buy depends on the job.
At a Glance
| Westerbeke Exhaust Elbow Lot | Water Pump Kit | |
|---|---|---|
| Listed price | USD 500.00 | USD 19.99 |
| Price bar | ||
| Condition | New | New |
| What's included | 13-piece lot: exhaust elbow, oil/air filters, drive belt, exhaust gasket, brass fittings, valve stem seals | Impeller, gasket, wear plate, pump cup, pump housing, grommets, O-rings, installation bolts/washers |
| Good for | Westerbeke marine generator exhaust overhaul / preventive-maintenance spares | Johnson/Evinrude OMC outboard water pump repair |
Where Each Product Wins
Westerbeke Exhaust Elbow Lot wins if you own or service a Westerbeke marine generator and want the major exhaust and maintenance parts in one purchase. The whole bundle is centered on the 037533 exhaust elbow and comes with the consumables needed for a generator service interval.
Water Pump Kit wins if you need a focused cooling repair for the specific outboards listed. It comes as a complete impeller service kit with the pump's wearable parts in the box.
Product Notes
Westerbeke Marine Generator Exhaust Elbow Lot

This is a new 13-unit Westerbeke OEM parts lot centered on the 037533 exhaust elbow. Along with the flanged exhaust riser/mixing elbow, you get an oil filter, air filter element, drive belt, exhaust gasket, 3/4 NPT brass plug, brass elbow fitting, and valve stem seals. That's enough to work through a generator exhaust overhaul and preventive maintenance without ordering pieces separately. The reason to choose it is completeness: everything arrives as one new lot. The limitation is fit: these are Westerbeke marine generator parts, so you need to be working on a Westerbeke generator to use them. It's best for boat owners or mechanics who want a stock of OEM service spares ready when a Westerbeke needs attention.
Water Pump Kit for Johnson Evinrude OMC 20-35 HP Outboard

This Candy Marine kit is aimed directly at Johnson/Evinrude/OMC cross-flow two-cycle outboards in the 20-35 HP range that use thru-prop exhaust and a one-piece gear case. It replaces impeller repair kit part numbers including 393630, 0393630, 395289, 393632, and 328755. Inside you'll find a neoprene impeller, impeller key, gasket, wear plate, pump cup, pump housing, grommets, O-rings, and installation bolts with washers. The strength here is affordability plus a complete pump service set for the listed motors. The limitation is scope: it's a water pump kit, and every part is for the water pump service job. For a compatible 20-35 HP engine, it's a straightforward choice.
Final Choice by Use Case
- For a Westerbeke generator exhaust overhaul: Choose the Westerbeke Marine Generator Exhaust Elbow Lot for a complete exhaust and maintenance parts bundle.
- For a compatible Johnson/Evinrude outboard water pump job: Choose the Water Pump Kit for Johnson Evinrude OMC 20-35 HP Outboard for a focused pump service kit.
- If you're stocking spares: the Westerbeke lot is a broad generator maintenance bundle; the water pump kit is a focused water pump service set.