SKU: 93306445412

SWEPCO | 501 Diesel Fuel Improver | Cetane Booster | Multi-Function

Sale price$95.00 Regular price$105.56
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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For Your Every Summer RSVP, with Code: SUMMER15

Description

SWEPCO | 501 Diesel Fuel Improver | Cetane Booster | Multi-FunctionBOOST COMBUSTION, CLEAN INJECTORS, FIGHT DIESEL DEPOSITS SWEPCO 501 Premium Diesel Fuel Improver is a powerful multi function additive designed to restore performance and protect today's diesel enginesespecially when running low quality or ultra low sulfur diesel fuels. It increases cetane for smoother, quieter combustion, reduces emissions, and protects injectors from wear and fouling. Whether you're managing over the road trucks, agricultural

BOOST COMBUSTION, CLEAN INJECTORS, FIGHT DIESEL DEPOSITS

SWEPCO 501 Premium Diesel Fuel Improver is a powerful multi-function additive designed to restore performance and protect today's diesel engines—especially when running low-quality or ultra-low sulfur diesel fuels. It increases cetane for smoother, quieter combustion, reduces emissions, and protects injectors from wear and fouling. Whether you're managing over-the-road trucks, agricultural equipment, or off-road fleets, SWEPCO 501 keeps your diesel systems cleaner, longer, and running more efficiently.

Key Features:

  • Raises Cetane Numbers: Boosts ignition quality for quicker starts, smoother acceleration, and more complete combustion—especially in cold weather.
  • Cleans & Protects Injectors: Keeps injectors clean and removes existing deposits for better spray patterns and fuel efficiency.
  • Reduces Emissions Up to 42%: Independently tested using opacity methods—cleaner fuel burns mean cleaner air.
  • Minimizes Wear from ULSD: Reduces abrasive injector and pump wear by up to 26%, countering the low-lubricity of ultra-low sulfur diesel fuel.
  • Winter Formula Available: Improves cold flow and prevents gelling during cold starts and sub-freezing operation.

Performance Benefits:

  • Improves ignition quality in any diesel fuel
  • Improves fuel economy and reduces fuel-related maintenance
  • Reduces smoking, misfiring, knocking, and starting issues
  • Extends injector and pump life significantly
  • Enhances fuel storage stability and system cleanliness

Markets Served:

  • Over-the-Road Trucking & Fleets
  • Agriculture & Farming Equipment
  • Marine & Dockside Operations
  • Heavy Construction & Industrial Vehicles

Common Applications:

  • All diesel engine types: mobile, stationary, turbocharged
  • Fleet vehicles, long-haul rigs, school and transit buses
  • Tractors, harvesters, and other farm equipment
  • Mobile construction and off-road diesel machinery
  • Diesel-powered generators, cranes, compressors

 

CLEANER FUEL. QUIETER COMBUSTION. FEWER BREAKDOWNS.
RUN SWEPCO 501 AND KEEP YOUR DIESEL DIALED IN.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 93306445412

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Amazon Customer
Los Angeles, US
★★★★★ 5
High quality, good price
Item Package Quantity: 2
Very good quality, half price of the OEM, fits perfectly. My second purchase, will buy this product again in the future.
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Reviewed in the United States on April 17, 2026
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kat1
Omaha, US
★★★★★ 5
Great value! Always replace these yourself!
Item Package Quantity: 1
Purchased this after being quoted $100 by the dealer to replace the cabin air filter. You Tube video showed me exactly how to swap it out. 5 mins and very easy! I have a 2029 Subaru Outback and this worked great.
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Reviewed in the United States on April 19, 2026
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Debra Collin
Phoenix, US
★★★★★ 5
The right cabin air filter
Item Package Quantity: 1
This is a good product and fit in our car.
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Reviewed in the United States on May 29, 2026
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Le’
Grantham, US
★★★★★ 5
Will Purchase Again
Item Package Quantity: 2
Good quality easy to install.
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Reviewed in the United States on May 26, 2026
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Rebecca LeBlanc
Boise, US
★★★★★ 5
Better than the expensive ones!
Size: 22"+21"(Fit U & J Hook), Style: Fit For TOYOTA Tacoma 2014-2005 Solara 2003-2001
I bought these for my 2010 Toyota Tacoma and they fit perfectly! They are better than the ones that came on the truck. For the price, they are worth it all day long. They pop on in seconds and work very well. No noise. Very durable. Easy to install.
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Reviewed in the United States on May 5, 2026

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