---
title: "Spencers Mobile Clean Truck Check llc — Clean Truck Check, Shafter, CA"
description: "Spencers Mobile Clean Truck Check llc in Shafter, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone…"
url: "https://ctcfinder.com/tester/spencers-mobile-clean-truck-check-llc-shafter/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Spencers Mobile Clean Truck Check llc

Clean Truck Check tester in Shafter, CA (Kern 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 | 214 Walnut St, Shafter, CA 93263 |
| County | Kern County |
| Phone | (661) 581-5355 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Spencers Mobile Clean Truck Check llc 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 | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is BIT Compliance Assurance in Shafter, about 1 mile away. [See listing](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/).

## Clean Truck Check testers in Kern County

Spencers Mobile Clean Truck Check llc is one of 107 testing businesses in Kern County on CARB's public tester list. 89 of them offer mobile testing and 53 do smoke opacity tests. In Shafter itself there are 4 listed businesses, 4 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 Spencers Mobile Clean Truck Check llc offer mobile Clean Truck Check testing?

Yes. Spencers Mobile Clean Truck Check llc 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 Spencers Mobile Clean Truck Check llc test a 2012 or older diesel truck?

Spencers Mobile Clean Truck Check llc does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [BIT Compliance Assurance](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Spencers Mobile Clean Truck Check llc charge for a Clean Truck Check?

Spencers Mobile Clean Truck Check llc has not published prices with us; call (661) 581-5355 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 Spencers Mobile Clean Truck Check llc a CARB-credentialed tester?

Spencers Mobile Clean Truck Check llc 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

- **[BIT Compliance Assurance](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/)** — 3308 Trail River Ln, Shafter, CA 93263 — (661) 742-7827 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[On Site Clean Truck Check Carb Testing](https://ctcfinder.com/tester/on-site-clean-truck-check-carb-testing-shafter/)** — 262 Rodriguez Ave, Shafter, CA 93263 — (661) 910-2585 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Perez Trans LLC.](https://ctcfinder.com/tester/perez-trans-llc-shafter/)** — 551 Drake Dr, Shafter, CA 93263 — (661) 978-1588 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Cal Testing Services Inc](https://ctcfinder.com/tester/cal-testing-services-inc-bakersfield/)** — 17306 Landeron Ct, Bakersfield, CA 93314 — (559) 259-7884 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[John Reichenberg](https://ctcfinder.com/tester/john-reichenberg-bakersfield/)** — Bakersfield, CA 93314 — (661) 820-2679 — 7 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Kern Clean Truck Inspections LLC](https://ctcfinder.com/tester/kern-clean-truck-inspections-llc-bakersfield/)** — 10112 Revere Beach Dr, Bakersfield, CA 93314 — (661) 563-1643 — 7 mi. Services: mobile testing, OBD testing, motorhome testing.