Answering the search intent directly: these replacement carburetors and impeller kits are designed to keep 9.9 hp outboard motors running smoothly, with options tailored for Mercury Mariner 4-stroke engines. The best buyers are DIY enthusiasts and boaters who need reliable, model-matched parts to restore performance. Below, five carefully chosen products align with 9.9 hp and similar 8–15 hp class engines, offering ready substitutes, clear compatibility notes, and practical limitations to consider.
| Product | Best For | Key Benefit |
|---|---|---|
| JLM MARINE 835382T04 Carburetor | Mercury Mariner 8–15 HP | Precise replacement for many Mercury/Mariner 4-stroke models |
| JLM MARINE 835382T3 Carburetor | Mercury Mariner 9.9–15 HP | Carburetor assembly with gaskets for multiple 4-stroke HP ranges |
| KUNOANZ 895110T01 Carburetor | Mercury Mercruiser 8–9.9 HP 4-Stroke | Targeted compatibility guidance to ensure correct fit |
| NorthBoat 394711 Water Pump Impeller Kit | Johnson/Evinrude 8–15 HP 4-Stroke | Comprehensive impeller kit for 8–15 HP variants |
| UANOFCN 99157T2 Outboard Impeller Kit | Mercury Marine 8–25 HP | Upper water pump kit for common 9.9–15 HP engines |
JLM MARINE 835382T04 Carburetor For Mercury Mariner

This carburetor is listed as a specialized replacement for Mercury outboards. It is designed to fit Mercury Mariner 4-stroke models with 8, 9.9, 13, and 15 HP, covering engines built roughly 1998–2006. Best for boaters looking to restore or maintain mid-range 4-stroke Mercury/Mercruiser performance. Caution: verify part numbers 3323-835382T04, 835382T04 and related variants match your exact engine before purchase. Selection supports multiple 8–15 HP models, so choose this if you need a direct Mercury/Mariner carburetor substitute.
Who it’s best for: DIY enthusiasts replacing a worn carburetor in a Mercury Mariner 4-stroke within the 8–15 HP range. Limitations: compatibility relies on model-year and serial data; mis-match can require additional gaskets or adapters.
JLM MARINE 835382T3 Carburetor For Mercury 4 Stroke 9.9-15 HP

This carburetor assembly includes gaskets and is intended as a direct replacement for Mercury outboard carbs in the 9.9–15 HP range. It matches models that require 3323-835382T1, 3323-835382T3, 3323-835382T04, and 835382A1 variants. Best for owners of Mercury Mariner 4-stroke engines around 9.9–15 HP who need a ready-to-install carburetor kit. Limitation: ensure your engine’s exact replacement numbers align with the listed compatibility to avoid mismatches.
Who it’s best for: Sailors or anglers maintaining consistent 9.9–15 HP performance. Choose this if you want a carburetor with comprehensive gaskets for a straightforward swap.
KUNOANZ 895110T01 Carburetor For Mercury Mercruiser 8-9.9 HP 4 Stroke

Designed to fit Mercury Mercruiser 8–9.9 HP 4-stroke engines, this carburetor emphasizes correct part compatibility by urging buyers to verify engine HP, model, and serial data before purchase. Best for cautious buyers who want explicit guidance from the seller on engine compatibility. Limitation: it relies on correct engine labeling to avoid choosing an incompatible part. If your engine data isn’t a precise match, look for a more general replacement.
Who it’s best for: Boat owners who want a model-specific carburetor and are comfortable cross-checking engine data. Choose this if you value explicit compatibility notes from the supplier.
NorthBoat 394711 Water Pump Impeller Kit For Johnson Evinrude 8-15 HP

This impeller kit spans Johnson/Evinrude 8–15 HP, including 8, 9.9, and 15 HP variants across 1995–2004 ranges. Best for those performing routine water pump maintenance or replacing worn impellers to prevent overheating. Limitation: ensure the kit includes the correct impeller size for your model, as mis-matches can affect cooling efficiency.
Who it’s best for: Owners of Johnson/Evinrude 8–15 HP 4-stroke motors seeking a broad, compatible impeller kit. Choose this if you want a single kit that covers multiple small- to mid-horsepower variants.
UANOFCN 99157T2 Outboard Upper Water Pump Impeller Kit

This upper water pump impeller kit targets Mercury Marine outboards in a 8–25 HP range, focusing on 9.9–15 HP engines by providing a robust replacement set. Best for users needing an upper-level kit that may fit mixed power ranges around 9.9 HP. Limitation: verify that the kit’s components match your engine’s exact part numbers to avoid incomplete cooling system replacements.
Who it’s best for: Mercury Marine owners seeking an all-in-one upper impeller kit with broad compatibility. Choose this if you require a kit that can span slightly higher horsepower units without ordering separate parts.
Buying Guide: Key Purchase Considerations
- Engine compatibility: Double-check HP range and model numbers (8–9.9–15 HP and related serial data) before buying carburetors or impeller kits.
- Part numbers and cross-compatibility: Many parts list multiple Mercury/Mariner numbers; confirm your engine’s exact numbers from the engine nameplate.
- Replacement scope: Carburetors affect fuel delivery and idle performance; impeller kits impact cooling. Determine which subsystem requires attention first.
- Gasket availability: Some carburetor listings include gaskets; verify that your purchase includes all necessary gaskets and seals for a proper seal and function.
- Installation complexity: Carburetor swaps may require tuning; impeller replacements are often straightforward but ensure you have the right tools and follow safety guidelines.
- Warranty and compatibility notes: Use seller-provided compatibility notes as a guide; if in doubt, contact support to confirm engine fitment.
FAQ
- What HP range is considered for these parts? They target 8–15 HP 4-stroke Mercury/Mariner engines, with some kits covering broader ranges.
- Do these parts replace specific part numbers? Yes, many items list compatible Mercury/Mariner and 3323- and 835382-series numbers; verify your engine’s exact numbers.
- Can I use an impeller kit on any 9.9 HP engine? Impeller kits should match the pump housing size and model; check your serial/model data to ensure compatibility.
- Is a gasket included with the carburetor? Some listings include gaskets; confirm contents before purchase to avoid missing components.
- What safety steps are needed for installation? Disconnect power, drain fuel lines, and follow exact manufacturer guidance for carburetor or impeller replacement to avoid engine damage.