BUICK 307.GM4S39 Rocker Arm Inline 248

( Part Type: Arm ), ( Conditions Options: Loose In Trunk ), ( Genuine Oem: Yes ), ( Ipn: 307.gm4s39 ), ( Manufacturer Warranty: 90 Day )

Review BUICK Rocker Arm Assembly 248 Inline fits 307 1939

Buick 307.GM4S39 Rocker Arm for 1939 248 Inline Engine

The Buick 307.GM4S39 rocker arm is an essential component of the intake valvetrain system for the 1939 Buick 248 inline engine. Designed and manufactured by General Motors, this top-quality rocker arm is engineered to deliver optimal engine performance, reliability, and longevity.

The Buick 307.GM4S39 rocker arm is specifically designed for use in the 1939 Buick 248 inline engine and features a robust, forged steel construction. This durable material ensures that the rocker arm can withstand the rigors of regular use and the high loads placed upon it by the engine. The arm is also precision-machined to ensure a perfect fit and proper clearance for the intake valves.

The rocker arm's surface is treated with a hard-wearing, low-friction coating. This coating minimizes wear and tear on the arm and reduces friction, allowing the engine to operate more smoothly and efficiently. Additionally, it helps to reduce the need for frequent maintenance and repairs, contributing to the overall longevity of the engine.

The Buick 307.GM4S39 rocker arm is designed to work in conjunction with other components in the intake valvetrain system, such as the pushrods, lifters, and camshaft. Together, these parts help to control the opening and closing of the intake valves, allowing air and fuel to enter the engine's cylinders for combustion.

Installation of the Buick 307.GM4S39 rocker arm is straightforward and can be completed with common hand tools. It is important to follow the instructions provided in the installation manual carefully to ensure proper fitment and function.

In summary, the Buick 307.GM4S39 rocker arm is an essential component for anyone looking to restore or maintain their 1939 Buick 248 inline engine. Its robust, forged steel construction, low-friction coating, and precise fit make it an excellent choice for those seeking optimal engine performance, reliability, and longevity.

Buick's 307.GM4S39 rocker arm is a component of the 1939 Buick inline-193.9 engine. This part is essential for the engine's proper functioning, as it connects the engine's pushrods to the valves, allowing them to open and close. Replacing a worn-out or damaged rocker arm can help improve engine performance and prevent potential damage. In this context, let's discuss some pros and cons of buying this particular rocker arm.

1. OEM (Original Equipment Manufacturer) Part: Buick's 307.GM4S39 rocker arm is a genuine GM part, which means it is specifically designed and manufactured for Buick vehicles. Using an OEM part ensures a perfect fit, proper function, and potential warranty coverage.

2. Improved Engine Performance: A worn-out or damaged rocker arm can cause valves to misalign, leading to poor engine performance. Replacing the rocker arm with a new one can help restore the engine's efficiency and power.

3. Compatibility: Since the 307.GM4S39 rocker arm is designed for the 1939 Buick inline-193.9 engine, it is guaranteed to be compatible with the vehicle.

1. Cost: OEM parts, in general, tend to be more expensive compared to aftermarket alternatives. The cost of 307.GM4S39 rocker arm may be a deciding factor for some buyers, especially if they are working on a tight budget.

2. Availability: Depending on the source, the availability of the 307.GM4S39 rocker arm may be limited. It might be challenging to find this part at local auto parts stores or through certain online retailers.

3. Longer Wait Time: Due to limited availability, buyers might experience a longer wait time when ordering a new 307.GM4S39 rocker arm.

Buick's 307.GM4S39 rocker arm is a high-quality, OEM part designed specifically for the 1939 Buick inline-193.9 engine. While it may come with a higher price tag and a longer wait time compared to aftermarket alternatives, it offers the advantage of guaranteed compatibility, improved engine performance, and potential warranty coverage. Ultimately, the decision to buy this rocker arm depends on the buyer's priorities, budget, and availability options.

If the buyer is looking for a perfect fit, improved engine performance, and potential warranty coverage, the 307.GM4S39 rocker arm is a solid choice. However, if the budget is tight, or if the wait time is a concern, the buyer might consider exploring aftermarket alternatives or contacting local specialists to source the part.

Details:

No expedited shipping is available. Any bulbs or wiring still attached to the,Tail Light,assemblies are not warranted part of the listing in any way. The part is not a custom body cut.

Brokered/non-stocked parts ordered specifically for your request. Axles Assemblies: Axle assemblies will not include any brake hardware: Calipers/Rotors/Shoes/Pads/Hoses/Brake Lines. Steering Columns: All steering columns sold will come without airbags. Transmissions: Transmissions will come with the torque converter and all sensors.

Sensors, valve covers, timing covers attached to core short/long blocks are not covered. Labor and Related Costs: This limited warranty does not cover labor, diagnostics, towing, rental car costs, or any other expenses related to the installation, testing, removal, replacement of a part. Normal wear and tear from the previous use is expected. Convenience Items: Items attached to or included with the part, such as wiring, bulbs, sockets, sensors, coils, distributor caps, spark plugs, water pumps, filters, brake parts, backing plates, hoses, vacuum lines, u-joints, timing belts/components, similar items, are considered convenience items and not covered by this limited warranty.

Limited Warranty Coverage. The part has not been installed. The part is not a special order.

Bolt-on items Exclusions from Limited Warranty. Bumper assemblies DO NOT come with Upper Grilles unless stated. Dispute Resolution.

The part has not been altered, modified, disassembled, overheated or damaged. Check the Q A section for Business Support. Scope: This limited warranty covers defects in the purchased part that render it inoperable or defective within 90-day period. All parts sold as is except expressly provided below.

Please remember you are purchasing OEM Original Equipment Manufacturer USED parts.

part #: 307.gm4s39 price

• $68.25

specifications rockeareng:

• for makes: Buick
• for years: 1939
• part type: Arm
• conditions options: Loose In Trunk
• genuine oem: Yes
• ipn: 307.gm4s39
• manufacturer warranty: 90 Day

payments rockeareng:

• wallet: Paypal
• other
• credit card: Diners-club

returns rockeareng:

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

general rockeareng:

• Engines Engine Parts > Valvetrain Components > Rocker Arms Parts
• condition: Used

offer rockeareng:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: December 5, 2025

shipping rockeareng:

• type: Fixed
• cost: $0.00
• transit: 3-5 Days
• service: Standard
• class: Standard

seller rockeareng:

• rating: 99.5%
• city: Annandale, Minnesota
• # reviews: 40775

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