47816: FUEL PUMP INDICATOR, Mercruiser

47816 Comparison

47816 in New Condition
photo	price	summary	rating
Details	$19.95	Condition is New, GENUINE NOS MERCRUISER SIGHT GLASS 47816 47816A2, FREE SHIPPING	100.0%

47816 in Used Condition
photo	price	summary	rating
Details	$10.00	Condition is Used, GENUINE MERCRUISER SIGHT GLASS 47816, shipping cost = $11.50	100.0%
Details	$19.95	Condition is Used, E5a Mercruiser Sterndrive Site Glass Assembly 47816, shipping cost = $7.00	99.9%
Details	$24.00	Condition is Used, 1970,s Mercruiser OEM Fuel Pump Sight Glass, Bad Diaphragm Indicator, Fuel Bowl, shipping cost = $6.37	100.0%
Details	$39.95	Condition is Used, N4 62092 Fuel Pump Mercruiser 351 V8 Sight Glass 47816, shipping cost = $7.00	99.9%

47816 in New other (see details) Condition
photo	price	summary	rating
Details	$26.00	Condition is New other (see details), MERCRUISER 22-39072 22-39072A1 Stern Drive Plug Kit , FREE SHIPPING	99.1%

47816 MERCRUISER Fuel Pump Sight Glass Diaphragm Indicator

Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl (1970s)

Description:

The Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl is a crucial component of the fuel system in Mercruiser marine engines manufactured during the 1970s. This part is designed to provide an easy and accurate method for monitoring the fuel level within the fuel pump, ensuring uninterrupted engine performance.

The sight glass diaphragm indicator bowl is a transparent, acrylic or glass component that allows the user to visually inspect the fuel level within the fuel pump. It is mounted on the exterior of the fuel pump housing, enabling clear and easy viewing from the engine compartment. The sight glass is protected by a sturdy diaphragm, which ensures that the fuel level remains consistent, even during engine operation, by preventing fuel from splashing against the sight glass.

The indicator bowl itself is a reservoir that maintains a constant fuel level within the sight glass. It is connected to the fuel pump via a flexible hose, allowing the fuel to flow from the tank to the engine, while maintaining the necessary fuel level within the sight glass for monitoring purposes.

This Mercruiser 47816 fuel pump sight glass diaphragm indicator bowl is specifically designed for marine applications and is constructed from durable materials that can withstand the harsh marine environment. The bowl is designed to be easily installable, requiring minimal modifications to the existing fuel system, and is compatible with Mercruiser marine engines from the 1970s.

Dimensions: The exact dimensions of this part may vary depending on the specific engine application. It is recommended to consult the original equipment manufacturer (OEM) specifications or contact Mercruiser technical support for precise measurements.

Conclusion:

The Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl is an essential component for maintaining the optimal performance of Mercruiser marine engines manufactured during the 1970s. It offers a convenient, visual method for monitoring the fuel level within the fuel pump, ensuring that engine operation is not disrupted due to a lack of fuel. This sight glass diaphragm indicator bowl is a high-quality, OEM component that is designed to withstand the rigors of the marine environment and is easily installable.

Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl (1970): A Comprehensive Analysis

Introduction:

The Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl is a crucial component for the accurate functioning of a Mercruiser marine engine from the 1970s. In this analysis, we will discuss the advantages and disadvantages of purchasing this fuel pump component.

Advantages:

1. Enhanced Engine Performance: The sight glass diaphragm indicator bowl allows you to monitor the fuel level in the pump, ensuring optimal engine performance. It helps you identify potential fuel delivery issues before they cause significant engine damage.

2. Easy Installation: The Mercruiser 47816 fuel pump sight glass diaphragm indicator bowl is relatively easy to install. It is designed to fit directly onto the fuel pump, making the replacement process more straightforward.

3. Durability: This fuel pump component is built to last. It is made from high-quality materials and is designed to withstand the rigors of marine environments.

Disadvantages:

1. Cost: The Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl is not an inexpensive part. Replacing this component may require a significant investment, depending on your engine's condition and the availability of local repair services.

2. Availability: Due to its age, finding a replacement Mercruiser 47816 fuel pump sight glass diaphragm indicator bowl may be challenging. You may need to search through various marine parts suppliers or even consider rebuilding the existing component.

3. Complexity: Installing the fuel pump sight glass diaphragm indicator bowl may require some mechanical expertise. If you are not confident in your ability to perform the installation yourself, it is recommended that you seek professional assistance.

Conclusion:

The Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl is an essential component for maintaining the optimal performance of your Mercruiser marine engine from the 1970s. While it may require a significant investment and some mechanical expertise to install, its benefits far outweigh the costs. Its ability to help you monitor fuel levels and identify potential issues before they cause engine damage makes it an indispensable tool for any boat owner.

Recommendation:

If you own a Mercruiser marine engine from the 1970s and are experiencing fuel delivery issues or simply want to ensure optimal engine performance, consider investing in a Mercruiser 47816 Fuel Pump Sight Glass Diaphragm Indicator Bowl. While it may be a complex and costly replacement, the benefits it provides make it a worthwhile investment for any serious boat owner. If you are not confident in your ability to install the component yourself, seek professional assistance to ensure proper installation and optimal engine performance.

Details:

This sight bowl is used as an indicator if the fuel pump developers internal leak. Mercruiser fuel pump sight glass, used on older engines that did not have a fuel vent line going to the carburetor.

specifications inboardfuel:

for years: 1970
brand: Mercruiser
mpn: 47816
part type: Fuel Pump Indicator
other numbers: Cover, 854392
items included: Mercruiser Part Number 22-32778 Pipe Nipple
country of origin: United States
filter included: No

returns inboardfuel:

policy: no returns

seller inboardfuel:

rating: 98.5%
city: green bay, wisconsin
# reviews: 1300

payments inboardfuel:

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credit card: visa

offer inboardfuel:

availability: in stock
started: january 14, 2026
options: ship-to-home
sold #: 8
prices: $10.00–$39.95
item condition:
- New
- Used
- New other (see details)
best offers: true
in stock #: 5

general inboardfuel:

category: Boat Parts > Inboard Engines Components > Intake Fuel Systems

shipping inboardfuel:

carrier: usps, ups
service: usps ground advantage, ups ground saver, usps priority mail
type: calculated
class: standard, economy, expedited
transit: 3-8 days

rating: 98.5% out of 100 based on 300 user ratings.