CarCareTruth Score
Mediocre, but wear gloves and ventilate.
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Prices may varyAbout this product's hazards. This product's Safety Data Sheet uses signal word danger. Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate the manufacturer's safety sheet. They do not replace the SDS or substitute for a hazard assessment specific to your task.
Health score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
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.
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From the manufacturer’s Safety Data Sheet, Section 8
“SDS §2 classifies serious eye irritation Cat 2A (H319), not the Cat-1 H318 that would force a required tier. SDS §8 lists safety glasses with side shields or goggles among the protective measures for direct contact and splash scenarios.”
— 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
“No skin-irritation or corrosion H-code (H314/H315/H317) is classified at the product level. SDS §8 lists nitrile, neoprene, or PVA gloves among general protective measures for handling, relevant to prolonged or repeated contact rather than brief spray use.”
— CRC
U.S. regulatory standard
29 CFR 1910.1000; 1910.1200
“Each employer shall assure that no employee is exposed [in excess of the PEL]…”
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
“H336 (narcotic effects) and H373 (repeated-exposure organ toxicity affecting the central nervous system, kidney, and peripheral nervous system) are both classified at the product level, and the DANGER signal word is driven in part by these health codes. SDS §8's respirator clause is the standard conditional boilerplate ('if engineering controls are not feasible or exposure exceeds limits'), but the narcotic and STOT-RE chemistry plus aerosol delivery in an enclosed garage make ventilation and a genuine PPE recommendation warranted for normal use.”
— CRC
U.S. regulatory standard
29 CFR 1910.134; 1910.138; 1910.1000
“the primary objective shall be to prevent atmospheric contamination…”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
UN GHS hazard statement
H373“May cause damage to organs through prolonged or repeated exposure”
UN GHS Rev. 9 (2021)
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.
This product ranks #14 of 16 in Carburetor Cleaner.Three above it ↓
Last reviewed July 5, 2026
TL;DR CRC's 5 oz single-use Throttle Body & Air Intake Cleaner is a straightforward solvent-based aerosol for clearing gum and varnish from a throttle body in one spray-in-place pass. The DANGER signal word is real, not just flammability: the SDS classifies serious eye irritation, a suspected developmental-toxicity hazard, and repeated-exposure organ toxicity, so eye protection and ventilation are the chemistry-backed minimum. Health sits at the category floor (1.0) once those deductions, high VOC, and a Prop 65 warning stack up.
A fast-evaporating solvent aerosol sprayed directly into the throttle body and intake passages, no soak time, work the plate by hand if accessible, then air-dry. Community feedback on CRC's broader line describes it clearing buildup quickly, though evidence is thin for this specific can. The high-solvent, low-propellant ratio in the SDS composition points to fast, low-residue evaporation, not a greasy film left behind.
Right for a home mechanic with light-to-moderate gum buildup on a throttle body, a quick spray-in-place job in a single-use size. Skip it for oxygen-sensor or catalytic-converter safety assurance: neither the listing nor CRC's page for this SKU makes that claim.
The DANGER signal word reflects serious eye irritation, a developmental-toxicity hazard, repeated-exposure organ toxicity, and narcotic vapor effects, so eye protection and ventilation are the chemistry-backed minimum. A Prop 65 warning applies. The SDS states 9.1% VOC as "compliant for all 50 states," using an acetone-exempt accounting method; absolute solvent content runs considerably higher, hence the high-VOC flag. It's also toxic to aquatic life long-term, so overspray should never reach a storm drain.
Neither the Amazon listing nor CRC's own product page for this SKU makes an explicit oxygen-sensor-safe or catalytic-converter-safe claim, which is why CarCareTruth scores it as a general carburetor/throttle-body cleaner rather than in the sensor-safe category. Check the current can label before spraying near sensors.
Yes · the SDS lists toluene at 1-3% alongside acetone (80-90%) as the primary solvent. A California Prop 65 warning applies.
Yes · the SDS states the product is compliant for use in all 50 states as a Fuel Injection Air Intake Cleaner, with a 9.1% regulatory VOC content. That figure uses the acetone-exempt accounting method; the absolute solvent content is higher, which is why the product still carries a high-VOC health flag.
Marketing copy from CRC, via Amazon. Not editorial.
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