Medium
30-60 minutes
This spark plug is an authentic OEM replacement part, it is not an aftermarket equivalent. It is specially made for use with Briggs and Stratton engines commonly installed on Toro lawn and garden equipment. A spark plug helps to deliver electric current from an ignition system to the combustion chamber. Please note, this item is sold individually. You should always gap the spark plug in accordance with the owners manual of the outdoor product you have. Replacing a spark plug you will need a apark plug wrench or a socket wrench to get the job done.
Plug-spark Ems 691043
OEM part for: Briggs and Stratton
Part Number: 691043
$6.83
In Stock
Ships within 1 business day 
Jump To:
Frequently Purchased Together ?
Compatibility
This Plug-spark Ems will fit the following 5478 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Briggs and Stratton
Show More Compatible ModelsThis item works with the following types of products:
- Engine Parts
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
1
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
I'm very happy with the service that I received. My parts were delivered quickly and I was back to mowing my lawn in no time.
The parts that I received were high quality, the same as I would have received from a parts supplier without running around town trying to locate someone who had them in stock.
Guest -
October 6, 2020
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 Plug-spark Ems
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.
Tune up
Pasquale - April 28, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Plug socket
Easy as 1 2 3 oil change, tune up all filters really easy, gapped new plug at 0.030
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Needed parts
Joseph - April 25, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set
Removed the cracked blower housing latch, air cleaner cover and replaced the air filter
Removed the spark plug and gapped the new one at 0.030 and installed it
Removed the spark plug and gapped the new one at 0.030 and installed it
Did you find this story helpful?
Thanks for voting and helping fellow customers!
annual maintenance
Robert - May 30, 2021
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, oil filter wrench
Changed oil, oilf filter, spark plug and air filter
Did you find this story helpful?
Thanks for voting and helping fellow customers!
bad carburetor need new plug
Ron - May 21, 2021
Tool Type
Engine
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver
changed out the carburetor air filter fuel line fuel tank and plug runs great now
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Water had got into the carburetor then need a Tune up
Robert - April 18, 2020
Tool Type
Engine
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Power Drill, Socket set
Put a new carburetor on the tune up
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Bent push rods
Mike - August 2, 2018
Tool Type
Lawn Tractor
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver
Removed cylinder heads from engine. Removed rocker arms and valves from head
Positioned valve guides and staked in place. Reassembled heads and replaced on engine.
Cleaned engine and reinstalled shrouding. Refilled oil, turned key and listened to the sound of a good running engine.
Positioned valve guides and staked in place. Reassembled heads and replaced on engine.
Cleaned engine and reinstalled shrouding. Refilled oil, turned key and listened to the sound of a good running engine.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tune up.
JOHN - February 7, 2018
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set
Took the old plugs out one at a time, checked the gap and put the new ones in. Replaced the old air filter with the new one.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
General maintenance
Billy - January 25, 2017
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Wrench Set, Oil filter wrench
Changed oil & filter,spark plug & air filter
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Blown head gasket
GARY - January 4, 2017
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set, TORX SET
Removed cowling, spark pug,valve cover, cylinder head.
Replaced head gasket, adjusted valves, set spark gap at 0.030 and reassembled. Then torqued all bolts. Replaced filters and fuel hoses.
Replaced head gasket, adjusted valves, set spark gap at 0.030 and reassembled. Then torqued all bolts. Replaced filters and fuel hoses.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Routine Maintenance
Dwain - June 16, 2016
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Nutdriver
1. Removed Engine Air Shroud and Air Cleaner Housing.
2. Removed and Replaced Pre Air Cleaner and Air Cleaner Cartridges.
3. Removed and replaced oil and fuel filters.
4. Removed, Gapped and replaced Spark Plugs
5. Drained and added new oil.
6. Oil drain plug on Briggs & Stratton engine was a little different in that there was a cap and the drain plug acted as a valve. To drain oil you had to rotate it.
2. Removed and Replaced Pre Air Cleaner and Air Cleaner Cartridges.
3. Removed and replaced oil and fuel filters.
4. Removed, Gapped and replaced Spark Plugs
5. Drained and added new oil.
6. Oil drain plug on Briggs & Stratton engine was a little different in that there was a cap and the drain plug acted as a valve. To drain oil you had to rotate it.
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.
