Easy
Less than 15 minutes
This is an original replacement part sourced directly from the manufacturer. The fuel cap is commonly found in Craftsman blowers and trimmers. This part is made of high-quality plastic, and is used to cover the fill nozzle of the fuel tank. No tools are required when replacing this item. Simply remove the old part and insert the new one in its place. The fuel cap is sold as an individual replacement part.
Fuel Cap Assembly 578931605
OEM part for: Poulan
Part Number: 578931605
$8.71
In Stock
Order within the next 5 hours and your part ships today! 
Jump To:
Frequently Purchased Together ?
Compatibility
This Fuel Cap Assembly will fit the following 353 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Poulan
Show More Compatible ModelsThis item works with the following types of products:
- Trimmer Parts
This part replaces obsolete part #: 545215901, 530049858, 530057973, 530049386
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
8
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
👍
👍
Guest -
June 15, 2023
Verified Purchase
part ordered part received
proper part as needed
Guest -
December 12, 2021
Verified Purchase
Exact parts
I am appreciative of this service, parts are top quality, fit and work well. Filling my orders and shopping has always been fast and dependable.
Guest -
November 30, 2021
Verified Purchase
Great Part
Arrived quickly, and perfect fit.
Guest -
November 27, 2021
Verified Purchase
stalling problem corrected
My poulan pole saw would stall and was hard to start. By replacing the cap, air could enter the fuel tank and relieve vacuum thus allowing fuel to continue flowing to carburetor. I purchase from ereplacement when my local dealer does not have part. Ereplacement has consistently delivered the part quicker than the dealer and at a competitive price.
Guest -
October 21, 2021
Verified Purchase
Great cap
Part fits good...
Guest -
June 5, 2021
Verified Purchase
Repair parts
All parts I ordered where fine. Leaf blower and weed Wacker are running like new. Thanks
Guest -
May 31, 2021
Verified Purchase
Need a part, no problem
I was amazed at the website. I cannot imagine how many parts are in the warehouse. Finding your part is quick and easy.It is admirable that there pictures of the parts. Instruction videos are invaluable. Even though the parts I ordered for the weed whacked did not fix the problem of the machine not working,I will try some other part.
Guest -
May 26, 2021
Verified Purchase
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Fuel Cap Assembly
No questions have been asked yet
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Leaky gas cap
David - May 11, 2016
👍 3 of 4 people found this instruction helpful
Tool Type
Blower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, None
Parts Used
Replaced with new gas cap
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Gas cap was broken and needed to be replaced
Pamela - July 30, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, We just needed the replacement part...that\\\'s it
Parts Used
We just removed the broken cap and threaded on the new one ! (So easy)
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Low cylinder compression, carburetor fowling
Sean - August 31, 2022
Tool Type
Hedge Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Allen wrench and T-handle
I disassembled the outer plastic housing to gain access to the motor. Once I had access to the motor I performed the disassembly in the following order:
Removed the carburetor and spacer, held in with two screws. Removed and replaced paper gaskets.
Removed the exhaust and heat shield, held in with two screws. Replaced exhaust gasket
Removed the cylinder, held in with two machined screws. Replaced rubber base gasket
Removed piston assembly and ring.
Cleaned and checked the piston and cylinder bore for gouges. Removed and replaced cylinder ring.
Reassembled in reverse order.
Removed the carburetor and spacer, held in with two screws. Removed and replaced paper gaskets.
Removed the exhaust and heat shield, held in with two screws. Replaced exhaust gasket
Removed the cylinder, held in with two machined screws. Replaced rubber base gasket
Removed piston assembly and ring.
Cleaned and checked the piston and cylinder bore for gouges. Removed and replaced cylinder ring.
Reassembled in reverse order.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Engine would start and then stop after a short run.
Anthony - October 24, 2021
Tool Type
Pruner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, none required
Parts Used
took old cap off and put new cap on. Changing cap was a breeze.
Most time was used determining that the air bleeder in the original cap was not letting air into the fuel tank.
Most time was used determining that the air bleeder in the original cap was not letting air into the fuel tank.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
carburator was glazed from old gas.
James - June 3, 2019
Tool Type
Blower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Small pick,carburator cleaner,air blower
The carburetor on a craftsman leaf blower that was given to me had gas left in it and dried inside the carburetor creating a sticky glaze and causing the the ports and and the needle valve and float to stick. Removed the phillips screws from top and bottom of the carb removed float by removing the small Philips head retaining screw that holds the pin down for the needle valve .took carb cleaner sprayed down the hole carb being sure to clean out all the ports inside the carb and also used an air blow gun to blow them out. Also replaced the small screen inside the carb. Whenever you rebuild small carbs like these save yourself the hassle of taking it apart again to replace that screen and replace it while your at that point . Its not worth it taking a shortcut thinking your saving time. Used the carb rebuild kit I ordered from Ereplacementparts .com worked perfect put the carb back together and the blower was back in action. Took about a half hour to an hour to complete repairs. Keep in mind I have done so many of these small carbs I can do them in my sleep so for those who have had little experience doin this it may take a little longer. But it is very simple main thing is to make sure to clean the inside of the carb thoroughly and make sure all the ports are clean. They also sell a small set of nylon brushes you can get to clean the ports the brushes range from 1/4 inch all the way down to basically micro-scopic for those tiny ports inside these carbs.
Thanks Jim
Thanks Jim
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Broke
Juan - April 17, 2019
Tool Type
Blower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, By hand
Parts Used
By hand replace with the new product . That young lady that help me to get my new product was fast to find it she did a GOOD JOB. Thank you .
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Fuel leak
Teddy - October 1, 2017
👍 0 of 1 people found this instruction helpful
Tool Type
Blower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, hands
Parts Used
Replaced fuel cap
Did you find this story helpful?
Thanks for voting and helping fellow customers!
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
