YANMAR 119578-18420 Intercooler Intake Manifold Ring Intercooler/intake 6LY2A 6CX

( Brand: Yanmar ), ( Part Type: Intake Ring Manifold ), ( Manufacturer Part Number: 119578-18420 ), ( Country Of Origin: Japan )

Review YANMAR Intercooler/intake Manifold O ring 6ly And 6cx

Yanmar 119578-18420 Intercooler/Intake Manifold O-Ring (6LY2A, 6LY, 6CX)

The Yanmar 119578-18420 is a crucial component for maintaining the optimal performance of Yanmar marine engines. This part is specifically designed as an O-ring for the intercooler and intake manifold, and it is compatible with engine models featuring the 6LY2A, 6LY, and 6CX series.

The O-ring plays a vital role in sealing the connection between the intercooler and intake manifold. It ensures a tight seal to prevent air and coolant leaks, which can lead to engine performance issues and even damage if left unaddressed.

This O-ring is manufactured using high-quality, heat-resistant materials to ensure durability and reliability, even in the harsh marine environment. The cross-sectional design of the O-ring allows it to effectively seal the connection while also providing the flexibility required to accommodate minor changes in engine dimensions due to thermal expansion.

Installing the Yanmar 119578-18420 O-ring is a straightforward process. Simply remove the old O-ring, clean the mating surfaces, and install the new O-ring in its place. Properly seating the O-ring ensures a reliable seal and can help prolong the life of your Yanmar marine engine.

In summary, the Yanmar 119578-18420 O-ring is an essential component for maintaining the performance and reliability of your Yanmar marine engine. By ensuring a tight seal between the intercooler and intake manifold, you can prevent leaks, improve engine efficiency, and avoid potential engine damage.

Pros and Cons of Buying a Yanmar 119578-18420 Intercooler/Intake Manifold O-Ring (6LY2A, 6LY, 6CX)

The Yanmar 119578-18420 is an essential o-ring component for the Yanmar engine's intercooler and intake manifold. Replacing this part is crucial for maintaining engine performance and preventing potential engine damage. In this analysis, we will discuss the pros and cons of buying this o-ring.

1. Improved Engine Performance: A worn-out o-ring can cause leaks, leading to poor engine performance. Replacing it with a new one ensures a proper seal, which in turn enhances engine performance and fuel efficiency.

2. Prevents Engine Damage: Leaks caused by a faulty o-ring can lead to significant engine damage. By promptly replacing the o-ring, you can prevent costly repairs and potential downtime.

3. Long-Lasting Solution: Yanmar is a well-known and reputable engine manufacturer. Using an original Yanmar o-ring guarantees a long-lasting and reliable solution, as it is specifically designed for the engine model.

1. Cost: Original equipment manufacturer (OEM) parts, such as the Yanmar 119578-18420, can be more expensive compared to aftermarket alternatives.

2. Limited Availability: Depending on your location, Yanmar o-rings might not be readily available at local retailers, requiring you to order them online or through an authorized dealer.

3. Delayed Shipping: If you need the part urgently, ordering it online might result in a delay in shipping, which could potentially cause further engine issues.

The Yanmar 119578-18420 is an essential component for maintaining engine performance and preventing potential damage. While it comes with a higher price tag compared to aftermarket alternatives, the benefits of using an original Yanmar o-ring include improved performance, reliable sealing, and long-term durability. If you prioritize the peace of mind that comes with using genuine OEM parts, the investment in the Yanmar 119578-18420 is worthwhile. If cost is a significant concern, consider exploring aftermarket alternatives. Ultimately, the decision depends on your engine's specific requirements and your budget.

part # 11957818420 prices

• $128.25-$200.00

specifications scowware:

• brand: Yanmar
• part type: Intake Ring Manifold
• manufacturer part number: 119578-18420
• country of origin: Japan

payments scowware:

• wallet: Apple-pay
• credit card: Discover
• other

returns scowware:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

seller scowware:

• rating: 100.0%
• # reviews: 52

shipping scowware:

• class: Standard, Economy
• service: USPS Ground Advantage, UPS Ground Saver, FedEx Ground Economy, UPS Ground
• transit: 6-12 Days
• type: Calculated
• carrier: USPS, UPS, FedEx
• cost: $5.62

general scowware:

• Parts Accessories > Boat Parts > Deck Cabin Hardware
• condition: New

offer scowware:

• best offers: True
• availability: In Stock
• quantity: 2
• sold: 0
• started: February 13, 2026
• options: Ship-to-home

Yanmar 119578-18420 Is Similar To:

• Yanmar 24311-000200 O Ring 1 Ap20.0 (37.4% similar) $120.00–$37999.05. (November 2nd, 2025)
• Yanmar 24311-001200 O Ring 1 Ap120.0 (38.9% similar) $10.89–$290.00. (January 14th, 2026)