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+$100 Core Exchange Charge
Part# 05-02532
MFR Model# 41234
41234HIGH PRESSURE 25 - 30 PSI CHANNEL ARM05-02532


The Early Model Lycoming Fuel Pump
(40174/40295 low pressure, 40595 medium pressure, 40296 high pressure)
In the spring of 1964, AC introduced the first dual diaphragm type fuel pumps. These pumps were the first models to incorporate the oil seal integral with the upper diaphragm and a separator ring for installation of the vent / overboard drain line. These pumps are characterized by a rocker arm which is an early riveted, laminated design. Current production in Lycoming pumps will not fit some pre-1978 applications without expensive modifications. You can eliminate the need for these modifications by ordering an FAA Approved overhauled early model pump for direct replacement.

The Late Model Lycoming Fuel Pump

During August of 1978, AC introduced what is now known as the "late model" fuel pump which has a "channeled" rocker arm. This pump is taller than the early laminated arm pump and has a unitized diaphragm assembly. Because of its increased size some pre-1978 model aircraft require expensive and time consuming modifications to carburetors or accessory housings (ref: Lycoming Service Inst. No. 1110C). These modifications are not required if our smaller, early model laminated fuel pumps are installed on your aircraft.


All internal parts are replaced with new certified parts. The actuating arms are magnetic particle test inspected; cast parts are inspected for wear, corrosion and cracks. Both the older laminated and newer channel style fuel pumps are overhauled for normally aspirated, pressure carburetor, and fuel injected systems.

Note: Customer will need to provide core for overhaul in the event our supplier does not have cores available to overhaul. Additional core charge will apply. Please add pump to cart to see current applicable core charge.

Download Tempest Fuel Pump Application Guide for Lycoming PDF

Download Tempest Fuel Pump Application Chart for Lycoming PDF
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

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Good Price, fast shipping

Burt S
April 27, 2021

Fits perfectly. I dont know if it runs as I have a lot more to do to get my engine running. However, it does come with the gasket and, the actuation arm is laminated steel unlike what others have stated that theirs is stamped steel.

Curt W
April 6, 2021

LS15472 overhaul. Looks brand new.

Marvin M
March 24, 2021

My engine driven fuel pump quit on my tiger, put this on, works like charm. Delivered in 2 days also.

Vebi S
March 23, 2021

Exactly as described. Perfect fit for my customers O-235-L2C. The application charts are a bit confusing so I had to call Tempest, but otherwise great product.

Dusty C
June 13, 2020

Very nicely packaged. Unit came with a gasket. I wasnt sure so i ordered another one. Looked new worked as advertised.

April 16, 2020

$30 fuel pump with a $400 piece of paper, suitable for framing. Works as expected. Its aviation.

May 25, 2018

took way too long to receive part. over a week, but packed well and part perfect.

Mike A
June 23, 2020

The overhauled pump is performing as it should.

David F
June 28, 2018

Replaced one leaking oil out witness pipe pump that was six months and 60 hours out of the box. Second replacement was leaking oil from witness tube within first flight. Now installing a third one within 6 months.

June 26, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the 41271 pump come with a new gasket?

Yes, pump 41271 comes with a new gasket.

Q: Does the LW-15473 pump come with a gasket?

Yes, it is in the box attached to the paperwork inside.

Q: Does the LW15472 fuel pump comes with the 8130 form?

Yes, the 8130-3 airworthiness approval form is included in the box with these fuel pumps.

Q: Are the LW-15472 and the LW-16335 low pressure pumps interchangeable?

These are both low pressure pumps but they are not interchangeable as they both have different applications.

Q: P/N: LW15472 Which Gasket is included in LW15472. Please be so kind and send me the P/N.

It comes with gasket pn# 60096.

Q: I am trying to determine which one I need? What does LW indicate on LW 15473?

It is always recommended to double check with your engine parts manual to verify what part number you are needing for your application. The LW indicates that it is an original Lycoming part number.

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