---
title: "Mag Clean Air Check — Clean Truck Check, Hemet, CA"
description: "Mag Clean Air Check in Hemet, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/mag-clean-air-check-hemet/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mag Clean Air Check

Clean Truck Check tester in Hemet, CA (Riverside County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 3473 Cougar Canyon Rd, Hemet, CA 92545 |
| County | Riverside County |
| Phone | (951) 665-0161 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mag Clean Air Check can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is CTC Specialists in Winchester, about 4 miles away. [See listing](https://ctcfinder.com/tester/ctc-specialists-winchester/).

## Clean Truck Check testers in Riverside County

Mag Clean Air Check is one of 251 testing businesses in Riverside County on CARB's public tester list. 233 of them offer mobile testing and 102 do smoke opacity tests. In Hemet itself there are 7 listed businesses, 6 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Mag Clean Air Check offer mobile Clean Truck Check testing?

Yes. Mag Clean Air Check says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Mag Clean Air Check test a 2012 or older diesel truck?

Mag Clean Air Check does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [CTC Specialists](https://ctcfinder.com/tester/ctc-specialists-winchester/) (about 4 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Mag Clean Air Check charge for a Clean Truck Check?

Mag Clean Air Check has not published prices with us; call (951) 665-0161 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Mag Clean Air Check a CARB-credentialed tester?

Mag Clean Air Check appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Jjim Transportation](https://ctcfinder.com/tester/jjim-transportation-hemet/)** — Hemet, CA 92545 — (951) 492-8518 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[All Smogs](https://ctcfinder.com/tester/all-smogs-hemet/)** — Hemet, CA 92543 — (562) 396-6891 — 4 mi. Services: OBD testing.
- **[AP Smog](https://ctcfinder.com/tester/ap-smog-hemet/)** — 561 N Palm Ave, Hemet, CA 92543 — (951) 489-8279 — 4 mi. Services: mobile testing, OBD testing.
- **[CTC Specialists](https://ctcfinder.com/tester/ctc-specialists-winchester/)** — 35197 Lantern Light Dr, Winchester, CA 92596 — (951) 422-2827 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[A-Z Transport Tech LLC](https://ctcfinder.com/tester/a-z-transport-tech-llc-san-jacinto/)** — 1975 El Milagro Rd, San Jacinto, CA 92582 — (951) 570-3538 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Central Diesel Fleet Union INC](https://ctcfinder.com/tester/central-diesel-fleet-union-inc-san-jacinto/)** — 650 S Grand Ave, San Jacinto, CA 92582 — (909) 272-5464 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.