Search  for anything...

Generac 5721 Portable Maintenance Kit for 992cc Engines: Essential Kit for Extending Engine Life and Ensuring Optimal Performance

  • Based on 327 reviews
Condition: New
Checking for the best price...
$23.99 Why this price?
Save $1,275.01 was $1,299.00

Buy Now, Pay Later


As low as $5 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Nov 3 – Nov 4
Order within 13 hours and 48 minutes
Available payment plans shown during checkout

Features

  • Complete Maintenance Solution: This portable maintenance kit is specifically designed for 992cc engines, providing you with all the necessary tools and components for proper maintenance
  • Enhanced Generator Performance: Regular maintenance using this kit helps extend the life of your portable generator and ensures optimal performance, allowing you to rely on it when you need it the most
  • Comprehensive Components: The kit includes essential items such as air and oil filters, ensuring efficient filtration and clean airflow for the engine
  • Easy Replacement: It also contains a spark plug and a spark plug wrench for hassle-free replacement, as well as an oil funnel and stable sample to facilitate smooth oil changes
  • Added Convenience: The inclusion of chamois pieces provides you with an extra cleaning tool, allowing you to maintain the appearance and cleanliness of your generator

Description

Scheduled maintenance is a necessity to ensure the long life and top performance of your portable generator. If your generator has been running for extended periods or has been stored for several months, it's a good idea to change the oil and fill the tank with fresh gasoline. Be sure to review your owner's manual for the suggested maintenance schedule. Oil must be purchased separately.

Brand: Generac


Wattage: 15000 watts


Fuel Type: Gasoline


Power Source: gasoline-powered


Recommended Uses For Product: Commercial


Item Weight: 1.34 Pounds


Voltage: 1.2E+2 Volts (AC)


Special Feature: Portable


Included Components: Air filter, Oil filter, Spark plug, Spark plug wrench, Oil funnel, Stable samples, Chamois pieces


Color: Orange


Brand: Generac


Wattage: 15000 watts


Fuel Type: Gasoline


Power Source: gasoline-powered


Recommended Uses For Product: Commercial


Item Weight: 1.34 Pounds


Voltage: 1.2E+2 Volts (AC)


Special Feature: Portable


Included Components: Air filter, Oil filter, Spark plug, Spark plug wrench, Oil funnel, Stable samples, Chamois pieces


Color: Orange


Engine Type: 4 Stroke


Ignition System Type: Magneto


Engine Displacement: 992 Cubic Centimeters


UPC: 696471057218


Manufacturer: Generac Power Systems Inc


Global Trade Identification Number: 18


Item Weight: 1.34 pounds


Department: Unisex Adult


Item model number: 5721


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 3 – Nov 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Genuine OEM Parts at a great price.
This kit is great! I bought this kit to service an older Gaurdian 15KW portable unit, M# 0045821, with the 992cc engine. It includes a genuine Generac 070185E lube oil filter which is an extended/upgraded filter from the 070185B filter that the manual calls for. It also includes a genuine Generac 0D9723 air filter element (The cost of the air filter by itself is more money than this kit which really makes this kit a no brainer). The kit also includes 2 genuine Champion RC14YC4 spark plugs. This part I am unsure of... The manual calls for RC14YC plugs gapped to .030”. I think the RC14YC4 plug is supposed to be gapped to .040”. I’ll have to do some homework on that and update. The kit also includes a packet of stay-bil which will tossed right into the trash, because, well, that’s all that stuff is, but that’s another discussion. It also appeared to contain a shop towel or something but I was distracted by the fact that there were genuine parts in this kit for this price. This makes it easier to get my customers what they want at a better price. Edit: I called Generac to double check on the spark plug number & gap. The RC14YC4 plug supersedes the RC14YC plug, however, the plug gap in this case, stays at the .030 that the owner’s manual calls for. ... show more
Reviewed in the United States on March 6, 2018 by Trigger8318

  • Generator tuneup kit for Generac 17500
Good Generac 17500 tuneup kit. Need to buy a fuel filter, in addition. Good value.
Reviewed in the United States on October 29, 2024 by G. Hart

  • Nice OEM kit
I bought this kit for a GP1750 generac generator. Everything fit just as expected. The kit includes everything pictured: the oval filter, the oil filter, the cardboard funnel, the two spark plugs, and the fuel stabil. This is the first maintenance kit that I have purchased and so far so good. It's been a few weeks since I installed the filters and spark plugs and everything is still running great. I'm using these on a generator that is used several times a week and haven't had any problems with the items yet. It came in a Generac branded box so don't hesitate to buy. Another reviewer mentioned that he didn't receive a spark plug wrench. I did not either, but the current product photo and description do not imply that a wrench is included and I was not expecting one. I was not able to find the spark plugs locally so I bought this kit off Amazon instead. ... show more
Reviewed in the United States on September 20, 2016 by TS

  • All in 1 kit
Great all in 1 maintenance kit, function exactly as oem
Reviewed in the United States on July 22, 2025 by Ethan McCoy

  • A great generator maintenance kit for the money
I bought this kit for my Generac GP 17500 portable generator I bought at Lowes in 2007. I have always performed a yearly maintenance on this generator which continues to work great after all these years. Maintenance is the key. The kit I bought included one air filter, one large capacity orange Generac oil filter, a paper oil funnel, a package of Stabil gas stabilizer additive, and two Champion Spark plugs. These items bought individually would have cost me around $45 as they have in the past without the Stabil. This is for sure a Great deal to purchase for the spring maintenance on your generator. ... show more
Reviewed in the United States on March 22, 2020 by JC

  • Great kit but it does not come with the Sta-bil fuel additive or funnel.
Everything was original OE parts and fit great but the ad says it includes Stabil fuel stabilizer and a funnel but neither one was in the box.
Reviewed in the United States on September 14, 2022 by Amazon Customer

  • Perfect
All good, thanks
Reviewed in the United States on February 26, 2025 by R. Jones

  • Great package
Perfect for your generator.
Reviewed in the United States on November 20, 2024 by Bill Cox

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...