Priced as of May 16, 2026
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Prices may varyFrom the Safety Data Sheet
Full SDS ↗ (rev. 2021-08-19)GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
EyesRequiredMfr. SDS §8 · 29 CFR 1910.133(a)(1) · GHS H319SkinRecommendedMfr. SDS §8 · 29 CFR 1910.138(a) · GHS H315LungsRecommendedMfr. SDS §8 · 29 CFR 1910.134 · GHS H370Ventilation—No PPE in published sourcesShow details for all categories ▾Hide details ▴
From the manufacturer’s Safety Data Sheet, Section 8
“SDS Section 2 classifies the mixture with H319 (Serious Eye Irritation Cat 2A). Aerosol mist at face level during engine-bay work can reach the eyes. SDS Section 8 specifies eye protection.”
— CRC
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
ANSI Z87.1 (incorporated via §1910.6)
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“SDS Section 2 classifies Skin Irritation Cat 2 (H315). The petroleum distillate solvent base with repeated or prolonged handling warrants chemical-resistant gloves. SDS Section 8 lists skin protection as a control measure.”
— CRC
U.S. regulatory standard
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from… chemicals which produce an adverse effect on the skin or eyes…”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“DANGER signal word is driven by health H-codes (H304 aspiration hazard, H360 reproductive toxicity, H370 STOT-SE Cat 1), not flammability alone. The petroleum distillate aerosol at close range and face level — combined with a high vapor pressure (5614.8 hPa) — means SDS §8 calls for adequate ventilation and respiratory protection in poorly ventilated spaces. The inhalation risk is chemistry-based, not generic SDS boilerplate.”
— CRC
U.S. regulatory standard
29 CFR 1910.134; 1910.138; 1910.1000
“the primary objective shall be to prevent atmospheric contamination… When effective engineering controls are not feasible… appropriate respirators shall be used.”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
The published Safety Data Sheet for this product does not specify ventilation protection for consumer use.
Workplace context
29 CFR 1910.134(a); 1910.1000
“the primary objective shall be to prevent atmospheric contamination [via] accepted engineering control measures (for example, enclosure or confinement of the operation, general and local ventilation…).”
Triggered by GHS H336 on the SDS.
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
CarCareTruth's Analysis
Last reviewed May 16, 2026
TL;DR CRC 05110 is the community reference pick for MAF sensor cleaning — 4.8 stars on 5,073 Amazon ratings and BITOG threads confirm fouled sensors return to spec voltage after a spray-and-air-dry. It evaporates completely without residue, and the label confirms compatibility with hot-wire elements and plastic housings. The DANGER signal word is driven by health H-codes — not just flammability — putting it in a higher hazard class than simpler aerosol cleaners. Eye protection and fresh air are the chemistry-based minimum.
What it is and how it performs
Remove the MAF sensor, hold it element-side down, spray two to four short bursts at the sensing element using the straw, and air-dry two to three minutes before reinstalling. The formula evaporates completely — no oily residue. BITOG threads and Amazon verified purchases (4.8★ / 5,073 ratings) confirm codes stay cleared across hot-wire and hot-film sensors on multiple platforms. One can covers multiple sessions.
Who should buy this — and who should skip it
The right pick for a home mechanic who pulled a P0101 or P0102 code — CRC 05110 is the product other forum threads compare against. It reliably cleans lightly to moderately fouled sensors from PCV oil mist and intake dust. Skip it if the sensor is visibly oil-soaked from a heavily over-oiled cold-air intake filter; that level of contamination usually means sensor replacement regardless of cleaner. Also note CARB non-compliance: cannot be legally sold in California or other OTC-regulated states.
Safety and environmental impact
DANGER here is driven by health H-codes — H304 aspiration hazard, H360 reproductive toxicity (methanol), H370 STOT-SE Cat 1 — not flammability alone, which puts it in a higher hazard class than IPA-based cleaners. Prop 65 warning confirmed. Eye and skin protection are warranted; use outdoors or with the garage door open. See frontmatter for full GHS codes and PPE tiers. Environmentally: not CARB compliant (~665 g/L VOC), H411 aquatic toxicity, no biodegradability data.
Frequently asked questions
Is CRC 05110 safe for hot-wire MAF sensors specifically?▾
The product label explicitly states compatibility with hot-wire, hot-plate, and plastic sensor types. The formula uses fast-evaporating light aliphatic hydrocarbons that do not leave an oily residue and do not attack ABS, nylon, or polypropylene — the common housing plastics on Bosch and Denso sensors. Community forum threads on BITOG and Amazon verified-purchase reviews across multiple vehicle platforms (Jeep TJ, Ram Ecodiesel) confirm codes clear and MAF voltage returns to spec. No element-damage reports were identified in community research.
Why does CRC 05110 carry the DANGER signal word if it's a MAF sensor cleaner?▾
The DANGER signal word here is driven by health H-codes in the SDS Section 2 mixture classification — specifically H304 (aspiration hazard), H360 (reproductive toxicity Cat 1A from methanol), and H370 (STOT-SE Cat 1 — causes damage to organs). This is meaningfully different from the DANGER signal word on IPA-based aerosols, which are classified DANGER only from aerosol flammability. The petroleum distillate and methanol chemistry in CRC 05110 drives a higher health hazard profile than formulas with a simpler solvent base.
Does CRC 05110 have a California Proposition 65 warning?▾
Yes. SDS Section 15 lists ethylbenzene (carcinogen, listed 2004), methanol (developmental toxin, listed 2012), toluene (developmental toxin, listed 1991), and n-hexane (male reproductive toxin, listed 2017) under Prop 65. The Rainforest API product data confirms the Prop 65 warning is present on the listing.
Is CRC 05110 CARB compliant?▾
No. The Amazon listing explicitly states 'Not VOC Compliant for California & OTC.' SDS Section 15 confirms VOC content of 95% by weight under both EPA and California accounting. The petroleum distillate solvent formula has no exempt-solvent accounting available.
Is the SDS publicly available?▾
Yes. CRC Industries publishes the SDS at https://www.crcindustries.com/media/msdsen/msds_en-1003729.pdf — the URL pattern uses the SDS item number (1003729). The current version is 01, issue date 2021-08-19. CarCareTruth has the SDS on file in Supabase Storage and scoring is derived directly from this document.
From the manufacturer
Marketing copy from CRC, via Amazon. Not editorial.
- •Mix
- •Made in the USA
- •Increases Horsepower And Improves Air/Fuel Ratio And Mpg
- •Plastic Safe-Dries In Seconds
- •Not Voc Compliant For California & Otc
- •Use Every Time You Clean Or Change Your Filter
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Manufacturer videos
Manufacturer images
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Manufacturer specifications
- Brand
- CRC
- Item Form
- Aerosol
- Scent
- Unscented
- Specific Uses For Product
- Time
- Material Feature
- Natural
- Surface Recommendation
- Plastic
- Special Features
- Concentrated
- Contains Liquid Contents?
- Yes
- Container Type
- container
- Material Features
- Natural
- Item Volume
- 325.31 Milliliters
- Unit Count
- 11.0 Ounce
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Top Amazon review
↗External — Amazon's most-helpful review for context.
Good product.
It works and value for the money.