Welcome Aboard!

10% savings across all ranges sitewide for new customers · Terms apply

FLASHSALE26

OMC 115HP 2-Stroke Outboard Marine Engine Parts

(4 products)

For OMC 2‑Stroke 115 HP outboard engines, this page helps you find compatible parts and service information. Inside you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Johnson/Evinrude/OMC collection. Scroll to the bottom of the page to start browsing parts for this engine, and remember you can use the Filter & Sort controls on the collection page to narrow results by horsepower, year range, and part category.

Browse All Johnson/Evinrude/OMC Parts

How to Identify Your 115 HP Model

  • Nameplate location: On most Johnson/Evinrude/OMC outboards, the model/serial tag is on the top outside edge of the clamp bracket or on the swivel bracket.
  • Reading the model code: OMC model numbers typically encode horsepower, shaft length, and a year suffix. Common shaft codes include S (short), L (long), and X (extra‑long); exact conventions vary by year—verify against your tag.
  • 2‑Stroke specifics: Many 115s use oil injection (VRO) or premix. Check for an oil tank and VRO pump to determine which you have; parts differ slightly between systems.
  • Platform differences: Earlier V4 crossflow models and later V4 loop‑charged (looper) models use different internal components. Matching parts to the correct platform prevents fit issues.

Platform Overview

V4 Crossflow Carbureted 2‑Stroke (approx. 1970s–early 1990s)

Feature Description
Configuration V4 crossflow, carbureted 2‑stroke; mechanical ignition and fuel systems typical of the era.
Common Models Johnson/Evinrude 115 V4 2‑Stroke models from the 1970s–1980s (various shaft lengths and controls).
Advantages Simple, serviceable design; good parts availability; straightforward carb and ignition tuning.
Notes Internal components (pistons, heads, carbs) are generally not interchangeable with later looper engines. Verify model tag before ordering.

V4 Loop‑Charged (Looper) Carbureted 2‑Stroke (approx. early–mid 1990s)

Feature Description
Configuration V4 loop‑charged, carbureted 2‑stroke; improved breathing and mid‑range torque versus crossflow.
Common Models Later Johnson/Evinrude 115 V4 2‑Stroke models (various year suffixes, shafts, and controls).
Advantages Smoother running and better efficiency for similar displacement; broad parts support.
Notes Many service parts carry over (plugs, anodes, pumps), but internal engine parts differ from crossflow versions. Confirm exact model/serial.

Routine Maintenance & Service Parts

Intervals below are general guidelines for typical recreational use. Always follow the official service manual for your exact model and operating conditions.

Item Interval* Remarks Parts Link
Gear oil (lower unit) Every 100 hrs or annually Inspect for water intrusion (milky oil). Replace seals if leaks are found; use new drain/fill plug gaskets. Lower Unit Seal Kits
Spark plugs Inspect every 50 hrs; replace ~100 hrs Use the specified heat range and gap for your model. Carry spares for on‑water replacement. Spark plug
Fuel filter (inline or under‑cowl) Every 100 hrs or each season Replace sooner after contaminated fuel or storage. Consider adding a water‑separating filter if not equipped. Fuel Filters
Water pump impeller/kit Every 2–3 years (sooner in sandy/silty water) Weak telltale or overheat alarm indicates service is due. Replace full kit for best reliability. Johnson/Evinrude/OMC Water Pump Repair Kits
Anodes (zincs) Inspect every 50 hrs; replace <50% remaining Match anode material to water type (salt/brackish/fresh). Ensure good electrical contact. Johnson/Evinrude/OMC Anodes
Thermostat Inspect annually; replace ~2 years Engine running too cool or hot can indicate a sticking thermostat. Johnson/Evinrude/OMC Outboard Parts
Oil injection (VRO) or premix Check each service interval If VRO‑equipped: inspect hoses, test alarm, and verify output. If premix: use TC‑W3 oil at the correct ratio (commonly 50:1 unless specified otherwise). Johnson/Evinrude/OMC Hoses
Propeller & hub hardware Inspect every 50 hrs Check for nicks, bent blades, worn hub, and fishing line around the shaft. Grease splines. Johnson/Evinrude/OMC Propellers

Frequently Used Parts Categories

Common Symptoms & Quick Checks

Symptom Check First Related Parts
Weak telltale or overheat alarm Inspect intake screens for debris, verify strong primer bulb, test thermostat, and inspect/replace impeller. Water pump kit, thermostat, intake screen, cooling hoses
Poor acceleration or power loss Check prop damage or incorrect pitch, fuel quality, clogged filter, fouled plugs; verify throttle opening and compression. Propeller, fuel filter, spark plugs, carburetor kit
Hard starting or rough idle Confirm primer bulb holds pressure, choke/enrichment operation, correct plug gap, and clean/synchronized carbs. Spark plugs, fuel lines/primer bulb, carburetor kit, gaskets
Excessive smoke (2‑stroke) Verify premix ratio or VRO function, check for stuck thermostat (engine running cool), and inspect for fuel/oil leaks. Hoses, fuel pump, thermostat, spark plugs
Gearcase noise or metal in gear oil Check oil level/condition, water intrusion, prop shaft seal damage (fishing line), and bearing wear. Lower unit seal kit, bearings, drain/fill plug gaskets

FAQs

Are parts interchangeable between crossflow and looper 115 models?

External service items (impellers, anodes, many ignition and fuel‑line parts) often cross over, but internal engine components generally do not. Match parts to your exact model number and year.

When should I replace the impeller?

As a rule of thumb, replace the water pump impeller every 2–3 years, or immediately if the telltale is weak, you ran through sand, or you had an overheat event.

How often should the gear oil be changed?

Change lower unit gear oil every 100 hours or at least once per season. If the oil looks milky, reseal the gearcase before returning to service.

What information do you need to confirm part compatibility?

Please provide the full model number from the clamp or swivel bracket, serial number, shaft length, and any known year range. Photos of the nameplate and the part you are replacing are helpful.

Ready to find parts for your OMC 115 HP 2‑Stroke? Browse the main Johnson/Evinrude/OMC collection by horsepower, year, and model.

Shop Johnson/Evinrude/OMC Parts

If you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.
View as
Back to top

Compare /5