SKU: 26107454820

Outboard Thermostat for Honda BF 75-225 HP Outboard Motors 19300-ZY3-023

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Description

Outboard Thermostat for Honda BF 75-225 HP Outboard Motors 19300-ZY3-023Honda Outboard Thermostat Fits Honda Marine BF 75 225 HP (Replaces 19300 ZY3 023) This thermostat is designed for Honda Marine 4 Stroke outboard motors, specifically models from 75 HP to 225 HP (BF75BF225) manufactured from 2002 to the present. It ensures your engine maintains the correct operating temperature for optimal performance and longevity. It serves as a direct replacement for Honda OEM part numbers 19300 ZY3 023 and 19300 ZY6 003. Please

Honda Outboard Thermostat – Fits Honda Marine BF 75-225 HP (Replaces 19300-ZY3-023)

This thermostat is designed for Honda Marine 4-Stroke outboard motors, specifically models from 75 HP to 225 HP (BF75–BF225) manufactured from 2002 to the present. It ensures your engine maintains the correct operating temperature for optimal performance and longevity.

It serves as a direct replacement for Honda OEM part numbers 19300-ZY3-023 and 19300-ZY6-003. Please verify compatibility with your specific engine model using the tables below.

  • Engineered for direct, hassle-free installation.
  • Maintains a consistent operating temperature of 60°C (140°F).
  • Constructed from high-quality stainless steel and copper for corrosion resistance.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Honda 19300-ZY3-023
Honda 19300-ZY6-003

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Honda BF115A2, A3, D, DK1 115 4-Stroke 2002-2012 19300-ZY3-023
Honda BF130A2, A3 130 4-Stroke 2002-2012 19300-ZY3-023
Honda BF135A4, AK2 135 4-Stroke 2002-2012 19300-ZY3-023
Honda BF150A4, AK2 150 4-Stroke 2004-2012 19300-ZY3-023
Honda BF175A3, A6, AK1, AK2, AK3 175 4-Stroke 2002-2012 19300-ZY3-023
Honda BF200A2, A3, A6, AK1, AK2, AK3 200 4-Stroke 2002-2012 19300-ZY3-023
Honda BF225A2, A3, A6, AK1, AK2, K3 225 4-Stroke 2002-2012 19300-ZY3-023
Honda BF75DK0, DK2, DK3, DK4 75 4-Stroke 2002-2012 19300-ZY6-003 Alternative fit
Honda BF80A, AK1 80 4-Stroke 2002-2012 19300-ZY6-003 Alternative fit
Honda BF90DK0, DK2, DK4, DK5 90 4-Stroke 2002-2012 19300-ZY6-003 Alternative fit
Honda BF100AK0, AK1 100 4-Stroke 2002-2012 19300-ZY6-003 Alternative fit

Technical Specifications

Specification Value
Product Type Thermostat
Installation Direct Replacement
Operating Temperature 60°C (140°F)
Housing Material Stainless Steel, Copper
Dimensions Overall diameter of top black gasket: 27.00 mm
Overall length: 33.60 mm
Warranty 1 Year

Package Contents

  • 1 x Thermostat Assembly (19300-ZY3-023)

Installation Guide

  1. Engine Cool Down: Ensure the engine is completely cool before starting.
  2. Locate Housing: Find the thermostat housing on the engine block.
  3. Drain Coolant: Drain enough coolant to prevent spills when the housing is opened.
  4. Remove Cover: Unscrew the bolts that secure the thermostat housing cover.
  5. Extract Old Thermostat: Carefully lift the cover to remove the old thermostat and its gasket.
  6. Clean Surfaces: Thoroughly clean the mating surfaces of the housing and cover, removing all residue.
  7. Install New Thermostat: Place the new thermostat into the housing, ensuring correct orientation.
  8. Position Gasket: Fit the new gasket onto the housing.
  9. Secure Cover: Reinstall the housing cover and tighten the bolts to the manufacturer-specified torque.
  10. Refill Coolant: Top off the cooling system with the appropriate coolant.
  11. Check for Leaks: Start the engine and carefully inspect the housing for any leaks.
  12. Verify Operation: Let the engine reach its normal operating temperature to confirm the new thermostat opens correctly.

Troubleshooting & FAQ

Q: How do I confirm this fits my engine?

A: This thermostat fits a wide range of Honda Marine 4-stroke outboards from 75 HP to 225 HP (2002-present). To guarantee fitment, please review the detailed compatible models list on this page and cross-reference your engine's original part number with 19300-ZY3-023 or 19300-ZY6-003.

Q: What are the common signs of a failing thermostat?

A: Key symptoms include the engine overheating, running too cool and failing to reach proper operating temperature, or erratic temperature gauge readings. A thermostat stuck in either the open or closed position is a common cause.

Q: How often should I replace my outboard's thermostat?

A: For preventative maintenance, it is recommended to inspect the thermostat during routine cooling system service and consider replacement every 2-3 years, especially if the engine is used frequently in saltwater environments.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26107454820

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A
Amy
Massapequa, US
★★★★★ 5
Adorable, Complete Set—Great for Special Occasions
Color: Beige, Size: 12, Color: Beige, Size: 12
This suit set is such a great find! It comes with everything you need—jacket, pants, shirt, tie, and bow tie—which makes getting a dressed-up look so easy. It's excellent quality for a suit in this price range. The linen fabric gives it a nice, lightweight feel and a polished look that works well for both formal and semi-casual events. My son looked adorable in it, and it was perfect for the spring wedding we attended. What I love: Complete 5-piece set—no need to buy extras Lightweight and comfortable material Classic, stylish look with nice details (lapel, pockets, etc.) Adjustable waistband is super helpful for fit Versatile for weddings, holidays, and other events Fit was true to size based on the chart, but I agree with the recommendation—if your child is between sizes or growing quickly, sizing up is a good idea. I sized up with the hopes that he can wear it again for another event because it looks fantastic! Overall, a really cute and practical suit set that looks great without being uncomfortable. Perfect for any special event
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
D
DD
New York, US
★★★★★ 4
Boys’ 5‑Piece Linen Suit Set
Color: Beige, Size: 16, Color: Beige, Size: 16
I ordered this 5‑piece linen suit in size 16 in the beige color. The set includes the jacket, pants, dress shirt, bow tie, and a slip‑on tie. The outer fabric is a blend of 70% polyester, 25% linen, and 5% spandex, and the lining is 100% polyester. The material is lightweight, which works well for warm‑weather events, but the pants are noticeably thinner than the jacket. The jacket feels sturdier because of the full lining. The jacket has a peak lapel, flap pockets, and cuff buttons, and the stitching and seams are tight and even. I did notice a few loose threads, but the fabric itself was smooth with no tears or flaws. The pants have an adjustable waistband, which is helpful, but the length was too long and will need to be tailored. The overall cut of the suit seems designed for children on the thinner side. The shirt included in my set was a pleated style rather than a plain dress shirt. It wasn’t the style shown in the product photos, and I would have preferred a standard shirt that could be worn for various occasions rather than a very formal shirt. The tie is a pre‑tied slip‑on style with an elastic band. I would have preferred a traditional tie instead. The suit arrived in good condition with no damage, and the color was even throughout all pieces. The price is on the higher end for similar 5‑piece sets. I rated it 4 stars because the jacket is well made and the set includes all the expected pieces, but the thin pants, unexpected pleated shirt, and slip‑on tie kept it from being perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
J
Jacobson
Dallas, US
★★★★★ 5
Adorable and Well‑Made Outfit for Special Events
Color: Light Blue, Size: 10, Color: Light Blue, Size: 10
Got this suit set for my son and absolutely love it. It comes with everything he needs to look sharp, and I really appreciate that it includes both a tie and a bow tie so we can switch up the style depending on the occasion. The quality is impressive for the price — the fabric feels light and comfortable, and the whole outfit has a polished look without being stiff or uncomfortable. The fit was spot on, and the adjustable waistband is a huge help for getting it just right. My son looked great in it, and it’s definitely something he can wear for more than one event. The little details on the jacket and pants give it a classic, dressed‑up feel that works for weddings, holidays, or any special moment. Overall, it’s a stylish, practical set that makes getting him ready so much easier. Really happy with this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
C
Crystal
Los Angeles, US
★★★★★ 4
Boys linen fabric suit
Color: Light Green, Size: 16
Boys suit set in a lighter green color. This suit is made with good proportions and seems to fit well. The sizing seems slightly big so maybe size down one size. The fabric does wrinkle easily so be aware that sitting and folding the suit may cause wrinkling. Otherwise it is a very nice suit for a formal occasion. It comes in many good colors.
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Reviewed in the United States on April 29, 2026
A
Atherney Family Farm
Belleville, US
★★★★★ 5
Nice elegant suit for any occasion.
Color: Light Blue, Size: 12, Color: Light Blue, Size: 12
The suit set is very nice, the fabric material is durable and soft. Overall stitching is tight with nice surging of the hems and great construction on the shoulders. Buttons and button wholes are well done. I'm going to iron in the creases on the front of the pants because they weren't folded properly for shipping. The material does hold on to wrinkles so don't be afraid of your iron to get a super sharp look. The color is a soft baby blue that stands out in a crowd of black suits. With the option of an elastic tie or clip on bowtie this is everything you need to make him look presentable for a variety of occasions. My only complaint about this suit kit is the dress shirt is stiff and thin. I found some loose threads that I don't trust to not get played with. I'll probably trade it out for something with a little more cotton. As far as cost goes mid range, but definitely worth the cost. I might consider something with a vest if it's a super formal event, but I'm very happy with how this suit comes together.
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Reviewed in the United States on April 18, 2026

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