--- product_id: 256639330 title: "05063 Guaranteed To Pass Emissions Test Formula - 12 Fl | Fuel System Cleaner, Emissions Reduction, Engine Fuel System Cleaning, Improved Fuel Economy, Pre-Smog-Test" brand: "crc" price: "$58.89" currency: USD in_stock: true reviews_count: 6 category: "Crc" url: https://www.desertcart.us/products/256639330-05063-guaranteed-to-pass-emissions-test-formula-12-fl-fuel store_origin: US region: United States of America --- # Compatible with gasoline & ethanol fuels Use every 3,000 miles for emissions & economy Max cleaning chemistry concentration 05063 Guaranteed To Pass Emissions Test Formula - 12 Fl | Fuel System Cleaner, Emissions Reduction, Engine Fuel System Cleaning, Improved Fuel Economy, Pre-Smog-Test **Brand:** crc **Price:** $58.89 **Availability:** ✅ In Stock ## Summary > ⛽ Clean fuel, clear conscience: Pass emissions like a pro! ## Quick Answers - **What is this?** 05063 Guaranteed To Pass Emissions Test Formula - 12 Fl | Fuel System Cleaner, Emissions Reduction, Engine Fuel System Cleaning, Improved Fuel Economy, Pre-Smog-Test by crc - **How much does it cost?** $58.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/256639330-05063-guaranteed-to-pass-emissions-test-formula-12-fl-fuel) ## Best For - crc enthusiasts ## Why This Product - Trusted crc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Regular Use Benefits:** Boosts fuel economy, smooth acceleration, and reduces harmful emissions - • **Preventative Maintenance:** Helps keep your engine check light off longer and prevents mildew buildup - • **Powerful Detergent Action:** Softens and dissolves fuel system sludge for peak engine health - • **Maximum Cleaning Chemistry:** Packed with the highest allowable cleaning agents for superior results - • **Universal Fuel Compatibility:** Works seamlessly with all gasoline and ethanol blends ## Overview CRC 05063 is a high-performance fuel system cleaner formulated with the maximum allowable detergent chemistry to dissolve sludge and deposits. Compatible with all gasoline and ethanol blends, it is designed for use every 3,000 miles to improve fuel economy, acceleration, and reduce emissions, helping maintain engine health and prevent mildew. ## Description Works with all gasoline and ethanol blended fuels.Maximum allowable cleaning chemistry for superior results.Use every 3,000 miles to improve fuel economy, acceleration and reduce emissions help prevent mildew. Review: Not really useful - The engine check light disappeared for two days and came back. Before every time I reset the error code the engine check light would not come back before few days, but after using this product the it would come back next drive. Review: I added this to my fuel and in the race ... - I added this to my fuel and it shut off the engine icon on the dashboard for a few days. The light has since came back on so I may need another treatment. Time will tell. ## Features - ADVANCED FORMULA: This product uses a powerful detergent to soften and dissolve sludge in the fuel system; removing deposits and residue. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000CIPUR8 | | Best Sellers Rank | #126,747 in Health ( See Top 100 in Health ) #546 in Disinfectant Sprays & Liquids | | Brand | CRC | | Brand Name | CRC | | Contains Liquid Contents? | No | | Customer Reviews | 3.9 out of 5 stars 3,189 Reviews | | Global Trade Identification Number | 00078254050638 | | Has liquid contents | No | | Item Weight | 0.01 Ounces | | Item weight | 0.01 Ounces | | Manufacturer | CRC | | Model Number | 05063 | | Number of Items | 1 | | Part Number | 05063 | | Size | 1 unidad (Paquete de 1) | | Special Features | Not_Performance_Used | | Special features | Not_Performance_Used | | UPC | 078254050638 | | Unit Count | 1 Count | | Unit count | 1 Count | ## Product Details - **Brand:** CRC - **Global Trade Identification Number:** 00078254050638 - **Has liquid contents:** No - **Item weight:** 0.01 Ounces - **Unit count:** 1 Count ## Images ![05063 Guaranteed To Pass Emissions Test Formula - 12 Fl | Fuel System Cleaner, Emissions Reduction, Engine Fuel System Cleaning, Improved Fuel Economy, Pre-Smog-Test - Image 1](https://m.media-amazon.com/images/I/81n1sZdCpRL.jpg) ## Questions & Answers **Q: How do I get my money back it did not work** A: I once submitted all the required paperwork for the money back and they never sent me a dime. I did see slight lowering of some numbers but very little. Basically buy it but don’t expect to actually get a refund much less twice the amount **Q: Does this clean oxygen sensors and catalytic converter?** A: This product cleans out just about everything totally from the gas tank to the exhaust tailpipe. Severely clogged systems may require a second treatment but anyone that lets it get to that point is probably going to need a lot more than an oil change and a few spark plugs. **Q: Does it have to be done right before the test or a week before is okay?** A: i've done it 4 days before testing...and this is if you're failing due to a worn out cat converter; if you're not passing due to HC, that is a tune up and maybe new O2 sensor... **Q: Will this help with the egg smell I get once in a while after I floor it. Doesn't stink all the time only once in a while** A: Yes, it will. The "rotten egg" smell is unburned fuel passing through your car due to dirty injectors, dirty intake valves, dirty compression chambers, dirty catalytic converts and dirty EGR valve & passageways, and dirty spark plug tips. This product cleans all of these areas. ## Customer Reviews ### ⭐ Not really useful *by F***I on 23 November 2020* The engine check light disappeared for two days and came back. Before every time I reset the error code the engine check light would not come back before few days, but after using this product the it would come back next drive. ### ⭐⭐⭐⭐⭐ I added this to my fuel and in the race ... *by G***K on 28 January 2017* I added this to my fuel and it shut off the engine icon on the dashboard for a few days. The light has since came back on so I may need another treatment. Time will tell. ### ⭐⭐⭐⭐⭐ Works if you need help. Not a miracle in a bottle. *by D***N on 28 May 2026* It has worked every time I've used this product. Won't fix a damage catalytic converter but will help you pass the test if your car almost passed. ## Frequently Bought Together - CRC Guaranteed to Pass Emissions Test Formula, 12 Fluid Ounce - Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz (Pack of 2) - 2X Cans Catalytic Converter Cleaner, Oxygen sensor cleaner, pass emissions, SMOG, fuel additive, combustion chamber cleaner --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/256639330-05063-guaranteed-to-pass-emissions-test-formula-12-fl-fuel](https://www.desertcart.us/products/256639330-05063-guaranteed-to-pass-emissions-test-formula-12-fl-fuel) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-24*