The ATC ZTSE4900 set of six high-pressure rail plugs safely isolates the fuel rail on International/Navistar MaxxForce 11 & 13 engines—essential for pressure testing, leak diagnosis, injector isolation, and high-pressure system service without fuel leakage or contamination. The High Costs & Dangers of Improper High-Pressure Rail Diagnostics on MaxxForce Engines Skipping rail isolation or using makeshift plugs during pressure testing frequently causes fuel spray, rail contamination, injector flooding, or inaccurate diagnostics—leading to misdiagnosis, repeated service, or fuel system damage. Fuel leakage / spray hazard – $500–$2,000 cleanup & safety rework Misdiagnosis of rail/injector fault – $1,000–$4,000 wrong parts & labor Contamination of high-pressure system – $2,000–$7,000 rail & injector replacement Fuel dilution / engine damage – $5,000–$15,000+ major repair Truck downtime – 3–12 days ($800–$2,500/day fleet loss) Rework & comebacks — Extra 15–60 hours at $150–$350/hr What is the ATC ZTSE4900 High Pressure Rail Plugs Set? The ATC ZTSE4900 High Pressure Rail Plugs is a set of six precision plugs engineered to block fuel flow and isolate the high-pressure rail on International/Navistar MaxxForce 11 & 13 engines (compatible with ProStar, LoneStar, PayStar, TranStar, WorkStar, and S13 models). Designed for professional diesel shops and fleet maintenance, these plugs enable safe pressure testing, leak detection, and individual injector diagnostics—preventing fuel hazards and ensuring accurate troubleshooting of high-pressure common rail systems. Complete Tool Specifications & MaxxForce Compatibility Application: High-pressure fuel rail isolation & diagnostics Compatible Engines: MaxxForce 11, MaxxForce 13, International S13 Compatible Models: ProStar, LoneStar, PayStar, TranStar, WorkStar Quantity: Set of 6 rail plugs Construction: High-pressure rated precision steel Shipping Weight: 1.00 lb Price: $149.00 Professional Features & Diagnostic Benefits ✓ Safe Rail Isolation Blocks fuel flow to injectors ✓ Individual Injector Testing Isolate segments for accurate diagnostics ✓ Leak Prevention No fuel spray during pressure testing ✓ High-Pressure Durability Rated for MaxxForce rail pressures ✓ Faster Accurate Diagnostics Reduces misdiagnosis time ✓ Set of 6 Plugs Covers full rail isolation needs Economic Impact: ATC ZTSE4900 ROI for Shops Scenario Cost Impact ATC ZTSE4900 proper use Tool set – $149.00 investment Fuel system contamination $2,000–$7,000 Misdiagnosis & wrong parts $1,000–$4,000 Engine damage from leaks $5,000–$15,000 Total improper diagnostic cost $8,000–$26,000 per incident ATC ZTSE4900 ROI (first use) 54–175X return on investment When MaxxForce Techs & Fleets Choose ATC ZTSE4900 MaxxForce 11 / MaxxForce 13 high-pressure rail diagnostics International ProStar, LoneStar, PayStar, TranStar, WorkStar fuel system service Injector leak & pressure testing High-pressure common rail isolation Fleet maintenance on MaxxForce-powered trucks Safe fuel rail segment testing Accurate injector performance diagnostics Isolate MaxxForce Fuel Rails Safely. No Leaks. Accurate Diagnostics. Faster Troubleshooting. Get ATC ZTSE4900 – $149.00 Why MaxxForce Technicians Trust ATC ZTSE4900 MaxxForce specialists choose the ATC ZTSE4900 for its high-pressure rating, secure rail blocking, and proven prevention of $8K–$26K in contamination, misdiagnosis, and engine damage per bad diagnostic job. It delivers safe, accurate, professional results every time. From fleet shops to diesel repair facilities, these plugs keep MaxxForce fuel systems clean and trucks on the road.