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LarryB's Cummins Repair Parts & Kits

At LarryB's, our goal is to provide you with what you need to solve your mechanical problems with the least cost and time spent. As the efficient connection between the customer and the manufacturer, we help you get the best parts at the best prices. We also share everything we’ve learned over our many years of hands-on experience working with diesel engines, so you’re never left guessing.
Brand: LarryB's Part Number: FS20
This is the part that gets destroyed if your starter sticks on. If your solenoid burned up you should replace the starter contacts or install a Larry'B's Solenoid-Saver Diode before you replace the solenoid. If the plunger stays up with the key on but won't pull up when you crank the ..
$111.99
Brand: LarryB's Part Number: 80904430
Internal Alternator Regulator Conversion Kit. This part converts an externally regulated Denso alternator to a self regulating alternator. This can be used for engine conversions or when the ECM has failed and does not regulate the charging properly. Does not work with Bosch alternator!!! Fits Denso..
$87.75
Brand: LarryB's Part Number: RL-50
LarryB's Feed Line/Fuel Heater/Filter Eliminator Kit For Dodge Cummins 12 Valve Larry B's Return Line hose replacement kit for Bosch P7100 Pump on the 94-98.5 Dodge Cummins and the VP44 on the 24 valve Cummins. This kit replaces the steel return line that runs from the injection pump overflow val..
$69.00
Brand: LarryB's Part Number: BPF1
This kit allows you to bypass the two most likely sources of fuel system air leaks in your Dodge Cummins 12-Valve. The fuel heater/screen assembly and the flex line that runs from the frame to the heater. This kit includes a 3/8" hose barb elbow to replace the stock 1/2" barb, 36" of ..
$59.99
Brand: LarryB's Part Number: FS20-FH
LarryB's P-Pump Fuel Solenoid Wiring Harness For Flat Pin Solenoids, Includes Relay, Link Cummins Bosch P7100 fuel solenoid connection harness. Perfect for replacing bad wiring, engine conversions and modifications. This harness is designed for easy connection and control of the fuel solenoid on th..
$109.99
Brand: LarryB's Part Number: FS21
New replacement dust boot for the fuel shut-off solenoid above. This is the exact replacement part made by the OEM. It keeps the solenoid plunger and spring clean to prevent binding. It also holds the plunger in the solenoid. About a 5 min job to remove and replace.I know this is a lot of money for ..
$29.00
Brand: LarryB's Part Number: TH16
This clear test hose connects between the fuel filter and injection pump allowing you to see air bubbles in the line from an air leak.. Comes complete with new seal washers. Easy to install. A very small amount of air in the fuel system can cause hard or no starting, rough engine, low milage and ma..
$26.00
Brand: LarryB's Part Number: BC60R
Cummins/Dodge 94-02 Positive Battery Cable. Ends are crimped and soldered. Don't settle for un-soldered cables.This 60" long 2/0 cable with clamp is used in both positive cable positions. It can replace the cable that runs across the radiator to connect the two batteries. Or it can be used..
$105.95
Brand: LarryB's Part Number: BCFB14
Cummins/Dodge Positive Battery Cable. This the 14" long cable used to connect the drivers side battery to the fusebox. Lug ends are crimped and soldered. It is made of 6 gauge wire.  Part Number: BCFB14  ..
$22.00
Brand: LarryB's Part Number: 391X
This fitting screws into the outlet of the lift pump allowing attachment of a 5/16" fuel hose. Includes hose clamp. This can be used to repair the rusted or cracked steel line going to the fuel filter. Use LarryB's part# BF12 Banjo fitting for the end that connects to the filter. Fits Dodge die..
$39.90
Brand: LarryB's Part Number: BCRK
When you crank your Dodge Cummins, the Denso Starter draws about 800 amps. This puts a huge toll on all the cable connections, rendering cheap auto parts store replacement clamp-on battery cable ends useless for such a big job.Ours can handle it. With so many dud options out there, we're confident i..
$84.95
Brand: LarryB's Part Number: R90SS
Super Size Starter contacts have approximately 90% more contact area than stock. Designed to carry twice the voltage load for easier starting and last years longer. Our Super Contacts Fit perfectly and are for replacement of sticking and clicking stock starter contacts in 1989 to 2006 Cummins powere..
$39.99
Brand: LarryB's Part Number: SS70A
This 70amp relay activates the fuel solenoid on years 94-98.5 12valve. If this relay is bad your engine will crank fine but will not start because the fuel is not getting to the engine. For the minimal cost, you may consider keeping a spare in your truck.   Also- check your blue wire fusible link (a..
$19.90
Brand: LarryB's Part Number: FL90
 This replacement fusible link is the protection for the power supply to your fuel shutoff solenoid. It's a 65 amp inline fuse that is connected to the driver's side battery at the positive terminal bolt. Sometimes the lug on the end or the wire itself gets corroded and will cause symptoms that are ..
$14.99
Brand: LarryB's Part Number: SS99
This diode is now resin potted to protect against breakage.     For 12valve engines, years 94 to 98-1/2 Fuel solenoid failure almost always begins with worn starter contacts. When a starter sticks on it is caused by the worn contacts arcing and becoming welded together. When this happens the start..
$32.95
Brand: LarryB's Part Number: C106SS
Suitable for use with 89-2007 Dodge Ram 2500/3500 Cummins 5.9L Diesel trucks. Stock contacts usually last around 100K miles and are commonly the first problem to show up with these starters. Up until recently the only repair option was to replace the starter and you're good for another 100k. Now th..
$12.95
Brand: LarryB's Part Number: BC39B
94-09 Cummins/Dodge Negative Battery Cable replacement. Ends are crimped and soldered. Don't settle for un-soldered cables.This 39" long 2/0 cable with clamp is used in both negative cable positions. It can replace the cable that runs from the passenger side battery to the engine ground. Or it can b..
$83.95
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