RELIABILITY FIRST
Fix the weak points. Drive with confidence.
Every diesel has a few parts that fail before the rest. We find them on your truck and fix them for good, with emissions-legal parts, at your location.
- 3diesel platforms
- Rankedfix list by risk
- Legalno deletes
- Mobilewe come to you
- Top Fix soon: common and expensive when it fails
- High Do with related work or before heavy towing
- Medium Check at service; fix when found
BULLETPROOFING · FORD POWER STROKE
Ford Power Stroke.
The weak spots we fix first, ranked by how often they fail and what they cost when they do.
- Top
6.0L head studs
Stock torque-to-yield bolts stretch under boost and heat, blowing head gaskets. ARP studs clamp the heads for good, usually done with gaskets and coolers.
ARP catalog → - Top
6.0L oil & EGR cooler
A clogged oil cooler starves the EGR cooler of flow until it ruptures. We watch the oil-to-coolant temp split and replace with upgraded, emissions-legal parts.
- High
6.0L FICM & standpipes
Weak FICM voltage causes hard starts; leaking standpipes and dummy plugs cause high-pressure oil leaks. Both are tested and fixed together.
- Top
6.7L CP4 protection
The CP4 pump can fail and send metal through the whole fuel system. Options: S&S DCR conversion or a disaster prevention kit.
CP4-to-DCR guide → - High
6.4L & 6.7L cooling
6.4L radiators and EGR coolers, and 6.7L secondary radiators and degas bottles, fail faster in Tucson heat. Pressure-tested and upgraded.
- Medium
7.3L fuel & sensors
Fuel bowl heater and seal leaks, cam position sensors and aging injector harnesses. Simple fixes that prevent no-starts.
Full specs, codes and generation details: Ford Power Stroke field guide →
BULLETPROOFING · RAM CUMMINS
Ram Cummins.
The weak spots we fix first, ranked by how often they fail and what they cost when they do.
- Top
5.9L killer dowel pin
The KDP can back out of the timing case and wreck the gear housing. A tab kit locks it in place for good.
- Top
Lift pump & filtration
VP44 and CP3 pumps die early with weak supply. An upgraded lift pump with extra filtration and water separation protects the injection system.
XDP catalog → - High
6.7L VGT turbo & actuator
Sticking vanes and failing actuators cause overboost, underboost and P2262 codes. Cleaned, recalibrated or replaced.
KC Turbos catalog → - Medium
6.7L grid heater bolts
Grid heater hardware can loosen and fall into the engine. Inspected and secured with an updated kit.
- High
Cooling system
Fan clutch, radiator and EGR cooler health matter more in the desert. Tested under load before summer.
- Medium
DEF & emissions health
DEF heaters, NOx sensors and DPF loading keep trucks out of derate. We diagnose and repair to keep it legal and running.
Full specs, codes and generation details: Ram Cummins field guide → · 2003–2007 5.9 with the best parts for each fix: 3rd-gen 5.9 reliability guide →
BULLETPROOFING · CHEVY / GMC DURAMAX
Chevy / GMC Duramax.
The weak spots we fix first, ranked by how often they fail and what they cost when they do.
- Top
LML CP4 protection
The LML’s CP4 shares the same failure risk as Ford’s. Disaster prevention kits and pump upgrades keep debris out of the injectors.
S&S catalog → - High
LB7 injectors & return flow
LB7 injectors crack and over-fuel the crankcase. Return-rate testing confirms it before replacement.
- High
Filtration & lift pump
Added filtration and water separation protect every common-rail Duramax, especially in dusty conditions.
XDP catalog → - High
Allison trans cooling
Trans cooler lines and fluid temperature are the first things to watch on towing trucks.
- Medium
Boost leaks & turbo
Intercooler boots, resonators and turbo connections leak with age. Smoke-tested and upgraded.
BD Diesel catalog → - Medium
L5P cooling & sensors
Coolant, NOx and EGT sensor health on the newest trucks; keep codes and derates away.
Full specs, codes and generation details: Chevy / GMC Duramax field guide →
GAS TRUCKS
Gas engines have weak spots too.
Ford 5.4L & EcoBoost
Timing chains, cam phasers and coolant intrusion on EcoBoost; spark plugs and phasers on the 5.4L.
Gas trucks →GM AFM lifters
Active Fuel Management lifter failures on 5.3L and 6.2L V8s. Repaired properly with the right parts.
Gas trucks →Ram HEMI
Exhaust manifold bolts and lifter/cam wear on 5.7L HEMIs.
Gas trucks →
HOW IT WORKS
A plan, not a parts list.
- Step 1
Tell us about the truck
Mileage, history, how you use it and any symptoms.
- Step 2
We check the data
Temps, pressures, boost, codes and a visual inspection of the known trouble spots.
- Step 3
Ranked plan with prices
What to fix now, what to do with the next job and what can wait.
- Step 4
Fixed for good
Installed on site with proven parts, then road-tested.
QUESTIONS
Bulletproofing FAQ.
Is bulletproofing worth it on a stock truck?
If you tow, work the truck hard or plan to keep it, fixing the known weak spots costs far less than the failure it prevents. If the truck is going soon, we’ll tell you what can wait.
Do you remove emissions equipment?
No. Every upgrade we install is chosen to keep your truck emissions-legal. Many failures blamed on emissions parts are really cooling, fuel or sensor problems we can fix.
Can it be done at my house?
Most of it, yes: coolers, fuel-system upgrades, lift pumps and turbo work are done on site. Big jobs like 6.0L head studs need the right space and access; we’ll confirm before scheduling.
How do you decide what my truck needs?
We start with history, mileage and how you use it, then check data: oil and coolant temperatures, fuel pressure, boost and codes. You get a ranked plan with prices, not a sales pitch.
What brands do you use?
Proven parts like ARP, S&S Diesel Motorsport, Bullet Proof Diesel, XDP and OE where OE is the better choice. Browse them in our brand catalogs.
READY WHEN YOU ARE
Let’s make your truck bulletproof.
Tell us what you drive and how you use it. We’ll send a ranked plan with prices.