MH Parts and Equipment Services
Clean Truck Check tester in Gonzales, CA (Monterey County).
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
MH Parts and Equipment Services appears on CARB's public list of credentialed Clean Truck Check testers. It lists mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. Mobile testing means the tester can come to your yard or job site.
- Location
- 539 Delmonte Dr, Gonzales, CA 93926
- County
- Monterey County
- Phone
- (831) 710-1878
- Mobile testing
- Yes — comes to your yard
- OBD testing
- Yes
- Smoke opacity (non-OBD)
- Yes
- Motorhomes
- Yes
- Credentialed testers
- 1
- Last verified
Call (831) 710-1878 Open in Google Maps
Before you call
- Have your VIN, odometer reading and plate number ready.
- Your vehicle must be registered in CTC-VIS and the annual compliance fee paid; the tester submits the result to CARB.
- Ask for the price per vehicle and any mobile trip fee. Typical published prices for an OBD test are $50–$135 per vehicle (see cost guide).
Which trucks MH Parts and Equipment Services can test
The test CARB requires depends on the engine's fuel and model year. Based on the services MH Parts and Equipment Services lists on CARB's tester list:
| 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 | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |
Clean Truck Check testers in Monterey County
MH Parts and Equipment Services is one of 37 testing businesses in Monterey County on CARB's public tester list. 33 of them offer mobile testing and 11 do smoke opacity tests. In Gonzales itself there are 3 listed businesses, 3 of them mobile. All testers in Monterey County.
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. You can test up to 90 days before a deadline. Get a free email reminder before each one.
How to check a tester's credential
CARB publishes its Clean Truck Check tester list, where MH Parts and Equipment Services appears as of November 1, 2026. Listing there is optional, so a missing name does not always mean a tester is not credentialed. After the test, check that the passing result shows for your vehicle in CTC-VIS; that is what counts for compliance.
Frequently asked questions
Does MH Parts and Equipment Services offer mobile Clean Truck Check testing?
Yes. MH Parts and Equipment Services 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 MH Parts and Equipment Services test a 2012 or older diesel truck?
Yes. MH Parts and Equipment Services lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See OBD vs smoke opacity.
How much does MH Parts and Equipment Services charge for a Clean Truck Check?
MH Parts and Equipment Services has not published prices with us; call (831) 710-1878 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.
Is MH Parts and Equipment Services a CARB-credentialed tester?
MH Parts and Equipment Services 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 near Gonzales
-
Isaiah Banuelos
- Mobile testing
- OBD test
-
Salinas Valley Emissions LLC
- Mobile testing
- OBD test
-
Express Truck and Trailer Services
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Jose Diaz
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Premier Smogs
- Mobile testing
- OBD test
- Motorhomes
-
Enrique salinas
- Mobile testing
- OBD test
Source: CARB's public Clean Truck Check tester list, last checked . Listing on CARB's list is optional for testers, so some credentialed testers are not shown. Services, hours and prices change; please confirm with the tester before you go. Something wrong? Send a correction.