YAMAHA BJR4860 Cylinder Head

( Manufacturer Part Number: BJR4860 ), ( Type: Cylinder Head ), ( Engine Type: 4-stroke ), ( Machine Type: Atv ), ( Oe/oem Part Number: Warrior 350 ), ( Items Included: Exhaust Studs Have Been Tapped To A M8 X 1.25 )

Review YAMAHA Cylinder Head Bare fits WARRIOR 350 1987–2004

The Yamaha BJR4860 cylinder head is a vital component for the Warrior 350 marine engine model produced by Yamaha between 1987 and 2004. This cylinder head is designed for use in outboard marine applications and is specifically engineered to deliver exceptional performance and durability in demanding marine conditions.

The BJR4860 cylinder head is a four-stroke design, meaning it completes a full power stroke with each engine cycle. It features an aluminum alloy construction, which provides excellent heat dissipation and resistance to corrosion, ensuring optimal engine performance and longevity.

This cylinder head comes in a bare state, meaning it does not include any additional components such as gaskets, valves, or camshafts. The intake and exhaust ports are machined to precise specifications to ensure optimal air-fuel mixture enters the combustion chamber and that exhaust gases are efficiently expelled.

The BJR4860 cylinder head is equipped with four valves per cylinder, arranged in a DOHC (double overhead camshaft) configuration. This design provides excellent valve control and allows for a more efficient combustion process, resulting in increased power output and improved fuel efficiency.

The cylinder head also features a multi-point fuel injection system, which delivers fuel directly to the combustion chamber through individual fuel injectors. This system ensures an even fuel-air mixture, resulting in more complete combustion and improved engine performance.

The BJR4860 cylinder head is designed to fit the Yamaha Warrior 350 engine model, and it is essential that it is installed correctly to ensure optimal engine performance and longevity. It is recommended that this cylinder head is installed by a qualified marine engine technician to ensure proper installation and adjustment.

In conclusion, the Yamaha BJR4860 cylinder head is a high-performance component for the Warrior 350 marine engine, designed to deliver exceptional power output and durability in demanding marine conditions. Its aluminum alloy construction, DOHC valvetrain, and multi-point fuel injection system are all key features that contribute to its outstanding performance and reliability. Installing this cylinder head correctly is crucial to ensure optimal engine performance and longevity.

The Yamaha BJR4860 Warrior 350 cylinder head, which was produced between 1987 and 2004, is a popular choice among Yamaha outboard motor users due to its durability and reliability. However, like any other engine component, it comes with its pros and cons if you're considering buying one as a replacement.

1. Durability: The Warrior 350 cylinder head is known for its robustness and long lifespan, making it a favorite among boat owners who use their vessels frequently.

2. Availability: Being a common part on older Yamaha outboard motors, the Warrior 350 cylinder head is easily available in the aftermarket, ensuring that you can find a good deal if you shop around.

3. Cost-effective: Compared to buying a new engine or even a complete rebuild, replacing the cylinder head can save you a significant amount of money.

1. Complexity: Installing a bare cylinder head requires a high level of technical expertise and the right tools, which can be a challenge for some do-it-yourselfers.

2. Time-consuming: The process of installing a bare cylinder head can be time-consuming, especially if you're not experienced in engine rebuilds.

3. Risk of damage: Handling and installing a bare cylinder head without proper knowledge and care can result in further damage to the engine or even personal injury.

The decision to buy a Yamaha BJR4860 Warrior 350 cylinder head depends on your technical expertise, budget, and the availability of alternative solutions. If you're comfortable with engine rebuilds and have the necessary tools, buying a bare cylinder head can save you money. However, if you're not confident in your abilities or don't have the time, it may be wiser to invest in a pre-rebuilt or even a new cylinder head. Ultimately, weigh the pros and cons carefully before making a purchase decision.

If you're not confident in your ability to install a bare cylinder head, consider purchasing a pre-rebuilt or even a new one from a trusted supplier. This will not only save you the time and effort but also ensure that the installation is done correctly, minimizing the risk of further damage to your engine. Additionally, make sure to research the supplier thoroughly to ensure that you're getting a high-quality product.

Details:

1987 2004 Yamaha Warrior 350 Cylinder Head Bare EXHAUST MOUNTING HOLES HAVE BEEN TAPPED OUT TO M8X1.25 Bjr#4860.

part #: bjr4860 prices

• $160.00-$499.00

specifications cylindermotorcycleiz:

• for models: 350, Warrior
• for makes: Yamaha
• for years: 1987-2004
• mpn: Bjr4860
• type: Cylinder Head
• engine type: 4-stroke
• machine type: Atv
• oe/oem part number: Warrior 350
• items included: Exhaust Studs Have Been Tapped To A M8 X 1.25

shipping cylindermotorcycleiz:

• type: Fixed
• cost: $0.00
• carrier: USPS
• class: Standard
• transit: 3-8 Days
• service: USPS Ground Advantage

offer cylindermotorcycleiz:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: April 16, 2025

returns cylindermotorcycleiz:

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

general cylindermotorcycleiz:

• condition: Used
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

payments cylindermotorcycleiz:

• wallet: Google-pay
• other
• credit card: Diners-club

seller cylindermotorcycleiz:

• city: Kunkletown, Pennsylvania
• rating: 99.6%
• # reviews: 2354

Yamaha BJR4860 Is Similar To:

• -11101-04-00 Cylinder Head Assy 11101-04-00 Yamaha (40% similar) This top end assembly is in very good condition other than the intake boot a little cracked as you can see pictures exhaust studs are broken off. TTR225 complete head with cam rockers timing gear valves bolts etc. Or smooth them off drill out fast free shipping...(June 7th, 2017)
• 01-yfn16021-1wb Pro Design Cool Head Replacement Stud Kit Yamaha Banshee (18.9% similar) It is not designed to work with the oe speedometer on wry model's.: the tusk impact complete wheel is a quality motocross and off-road motorcycle. Performance wheel assembly for motocross and off-road racing applications. Details: warranty: unspecified length manufacturer part number: 01-YFN16021-...(March 20th, 2018)
• 04yz250f Yamaha Cylinder Head Valves Camshaft Cam Cover Yz (40.7% similar) Free shipping in the USA to lower 48 states. All only parts pictured are included in this listing. Therefore, most items are shipped promptly via USPS priority, 1ST class if under 16OZ. Please see pics for cosmetics as are part of the. Many parts from the 04 YZ250F fit other years model's. Or FedEx ...(February 11th, 2019)
• 05wr250f Yamaha 2005 Wr250f Cylinder (52.7% similar) All parts pictured are included. Or FedEx ground. Free shipping in the USA to lower 48 states. Therefore, most items are shipped promptly via USPS priority, 1ST class if under 16OZ. Journals and top of head look ok. Bottom of head has extensive damage to and valves. Many 05 WR250F parts fit other ...(December 3rd, 2017)
• 0931-0629 Moose Yamaha Racing Cylinder Yz (39.6% similar) It is a used part so may show some signs of wear. Removed from: 2016 yamaha YZ250F with miles please review all pictures to assess the condition of item. Came off a well running bike. Cylinder looks to be in good shape. Cylinder has no scores or scratches...(March 15th, 2019)
• 1061846 Yamaha Engine Motor Cylinder Head (50% similar) Many countries only allow 79 max package length and girth combined. Each part is systematically placed to be easily located once purchased. If the item does not fit motorcycle model's specified in listing. More options available upon request...(April 12th, 2018)
• 1069170 Yamaha Engine Motor Cylinder Needs Replatted (41.1% similar) Each part is systematically placed to be easily located once purchased. If the item does not fit motorcycle model's specified in listing. More options available upon request...(April 19th, 2018)
• 10m-11110-00-00 Yamaha Cylinder Head (44% similar) 1982 XJ1100 tics head...(November 21st, 2018)
• 10m-11191-00-00 Yamaha Maxim Xj Engine Cylinder Head Valve Camshaft Cover (42.2% similar) Make sure you are purchasing the correct part for your bike and if need any measurements just let me know. Please first before on any issue. This was removed from a 1982 yamaha XJ1100 maxim motorcycle. There may be dirt, scratches, scuffs rust etc. Comes with everything pictured, consult dealer ...(June 23rd, 2018)
• 10v00 Yamaha Cylinder Head (49.4% similar) Yamaha DT125 liquid cooled top cylinder head in good condition, plug threads are ,comes with the sensor it, as seen pics 10V00...(September 22nd, 2018)
• 11h-11110-00-00 Yamaha Vision Cylinder Head Valves Springs Cam Shaft Complete Assembly (36.9% similar) Unknown miles. Front cylinder head assembly. I disassembled it to pack. Shows little to no wear on the cams, should be a good go head, just clean up gasket surface and bolt. Includes bolts...(March 22nd, 2018)