"DONT FORGET THE HARNESS PLUG FOR YOUR SEMI TRUCK RADIO APPLICATION"
MAKE
TRUCK MODEL
SIZE / OHMS
Freightliner
In-door on all-class 8 models
5.25" / 4ohm
Freightliner
Century Class Models
6"X9" / 4 ohm
Freightliner
FLR M2 Models
5.25" / 4 ohm
International
All 9000,9000i,9400,& 9900 B-pillar & sleeper
5.25" / 4 ohm
International
2000 and after - med duty 4000, 7000, 8000
4" / 4 ohm
International
2000 and after - med duty 4000,7000,8000
5.25" / 4 ohm
International
All 9000, 9400 and 9900 CB Speaker - Drivers side
3.5" / 4 ohm
International
All 9000, 9200, and 9300 Day Cab B-pillar
5 X 7" / 4 ohm
International
ProStar Basic - Door
6.5" / 4 ohm
International
ProStar Basic - B Pillar
6.5" / 2 ohm
International
ProStar Premium - Door
6.5" / 2 ohm
International
ProStar Premium - Tweeter
1.3cm / 4 ohm
International
ProStar Premium - Sleeper
6.5" / 4 ohm
International
ProStar Premium - Subwoofer
10" DVC / 6 ohm
Kenworth
Medium Duty and W900 rear
5.25" / 4 ohm
Kenworth
Conventional models, cab front W900
4" / 4 ohm
Kenworth
COE K 100E Series Cab front sleeper
5.25" / 4 ohm
Kenworth
T2000 Cab Front & and Sleeper
6.5" / 4 ohm
Kenworth
B-Cab Models, Cab Front & Rear 2004 & prior
6.5" / 4 ohm
Kenworth
All NBI Sleepers
5.25" / 4 ohm
Kenworth
All NBI Cabs
4' X 6" 8 ohm
Mack
All models
5.25" / 4 ohm
Peterbilt
Headliner - Standard and Premium Sound
4 X 6" / 4 ohm
Peterbilt
B - Pillar EHD
6.5" / 2 ohm
Peterbilt
Headliner - EHD
4 X 6" / 2 ohm
Peterbilt
B-Pillar Premium Sound
6.5" / 8 ohm
Peterbilt
36 Sleeper
6.5" / 4 ohm
Peterbilt
48 & 63 Sleepers (before 05/15/06)
6.5" / 4 ohm
Peterbilt
48 & 63 Sleepers (after 05/15/06)
4 X 6" / 8 ohm
Peterbilt
70 Sleeper
4 X 6" / 8 ohm
Volvo
660, 770, and 880
NA
Western Star
Overhead Console
4" / 4 ohm
Western Star
Cab and Sleeper
6.5" / 4 ohm
Replacing your semi truck speaker with the proper size is very important to maintain correct sound quality.  Just as important is the ease of installation.  The speakers supplied OEM in most of the cabs are basic dual cone shallow mounts, just adequate to reproduce the sound potential from your OEM stereo.  Once you change the factory radio with another brand the games has changed.  Now you need to replace the speakers to justify the upgrade sound that it can achieve.  The chart below should be used as a quick reference for replacement.  To insure the exact replacement size, we suggest to remove one of the speakers and measure the size.  This makes it faster and easier when you actually install the new speakers. We use and have found the Clarion line of Professional speakers meet the factory specs in size and will greatly improve the overall sound from your new trucker radio.  We have sold this brand for several years and found the quality to be impressive.  The Clarion speakers will give you years of use and a price range that saves you money even over the OEM factory repleacements.
All our speakers include wires and covers except for the 3.5", 4 X 6" ,10" versions.
  If your specific truck is not listed on this chart , contract your local commercial truck brand dealer for a speaker replacement size or remove the speakers and measure.
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Semi Truck Replacement Speaker Guide
Use the chart to find your correct size of Semi Truck Speakers