Size Chart
×
The Billet Technology 30015 Sigma Series radiator cap cover swaps out the dull factory plastic radiator cap for a precision CNC-machined billet aluminum piece across the full Chrysler, Dodge, Jeep, and Ram Hemi lineup. Every piece is machined in Lake Worth, Florida from solid 6061-T6 certified domestic aircraft-grade aluminum, giving your engine bay a factory-plus look with the durability Mopar performance drivers demand. No modifications, no adapters. Installs in minutes with zero tools required.
The Sigma Series 30015 ships in five distinct options built around your specific engine, so double check your Hemi displacement before ordering. Choose OEM Replica for a clean, unbranded billet look, or select the 5.7L, 6.1L, 6.2L, or 6.4L engraved version to call out exactly what is under your hood.
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2011-2017 | Chrysler | 200 | |
| 2005-2023 | Chrysler | 300 | |
| 2008 | Dodge | Caliber | SRT-4 |
| 2008-2023 | Dodge | Challenger | |
| 2006-2023 | Dodge | Charger | |
| 2011-2023 | Dodge | Durango | SRT |
| 2005-2008 | Dodge | Magnum | |
| 2013-2016 | Dodge | Viper | SRT/GT/GTS |
| 2011-2021 | Jeep | Grand Cherokee | SRT |
| 2009-2018 | Ram | 1500 |
| Detail | Value |
|---|---|
| Part Number | 30015 |
| Brand | Billet Technology |
| Material | Solid 6061-T6 Aircraft-Grade Aluminum |
| Finish | Satin (Raw Machined Aluminum); Color/Engraved Variants Available |
| Product Type | Radiator Cap Cover |
| Country of Origin | USA |
| Warranty | Limited Lifetime Warranty Against Defects In Materials And Workmanship |
Yes. The Sigma Series 30015 includes a billet aluminum pressure cap insert that maintains OEM spec pressure ratings while replacing the factory plastic housing.
How do I know which engraving option to order?Match the 30015 variant to your engine's Hemi displacement, OEM Replica, 5.7L, 6.1L, 6.2L, or 6.4L, so the engraving reflects what is actually under your hood.
Is the Billet Technology 30015 made in the USA?Yes. All Billet Technology products, including the 30015, are manufactured in Lake Worth, Florida using certified domestic 6061-T6 aluminum.
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
Billet Technology produces precision CNC-machined billet aluminum accessories for performance vehicles. Their products include oil catch cans, filler caps, dipstick handles, and cooling system components machined from 6061 aluminum for a clean, professional engine bay appearance. Popular Billet Technology ProductsBrowse the full Billet Technology catalog to find the right upgrade for your application. Every product ships fast with fitment verified against manufacturer specifications. What are Billet Technology's most popular products?Billet Technology's top sellers include their oil catch cans, billet coolant reservoir caps, dipstick handles, and radiator caps, all CNC-machined from billet aluminum and available in anodized finishes. Are Billet Technology products vehicle-specific?Yes, Billet Technology makes direct-fit products designed for specific vehicles and engine bays, ensuring proper fitment without modification for supported applications. Explore related categories: Exhaust...
View Billet Technology Products
This engine parts collection covers oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, and engine bay dress-up parts for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. The collection is particularly strong for Dodge Challenger, Charger, Durango, Jeep Grand Cherokee Trackhawk, and Ram TRX platforms running 6.2L Hellcat, 6.4L HEMI, and 5.7L HEMI engines, where oil catch can and cooling upgrades address known OEM weaknesses in the PCV and thermal management systems. Import performance platforms including GM LS-based builds, Chevrolet Camaro, and Corvette applications are also represented through Mishimoto, CSF, and ZPE GripTec product lines. Builders who invest in engine bay organization and reliab...
View Engine Products
This engine block collection covers bearings, gaskets, engine mounts, block off plates, block heaters, PCV valves, sleeves, and engine bay accessories for performance builds, engine refreshes, OEM-style replacement, diesel truck upgrades, HEMI builds, Hellcat and Trackhawk platforms, LS swaps, Honda swaps, Nissan VR38DETT builds, and Toyota truck engines. Main bearings, rod bearings, and connecting rod bearings from ACL Race Series, King Engine Bearings, and Clevite are the most critical internal components for builders refreshing the rotating assembly on street cars, drag builds, or engines being prepared for forced induction. Engine mounts and polyurethane mount upgrades from Innovative Mounts and Kartboy address drivetrain movement in sport compact and high-torque performance applications. Gasket kits from Cometic and MAHLE seal the oil, coolant, and exhaust passages in both stock-displacement and overbore engine combinations.Popular UpgradesBest-selling products include ACL Race...
View Engine Block Products
Engine covers and engine bay dress-up components transform the underhood appearance of street cars, show builds, and muscle car restorations by replacing factory plastic engine toppers, air cleaner assemblies, and exposed wiring with billet aluminum, carbon fiber, and anodized covers that project a finished, custom look. On modern high-performance vehicles including the Dodge Challenger, Charger, Hellcat, Trackhawk, Jeep Grand Cherokee, and Chevrolet Camaro and Corvette, factory valve covers and engine toppers are functional but visually uninspiring compared to what Billet Technology, Cordes Performance, and Anderson Composites produce for the same platforms. Classic and muscle car owners restoring small block Chevy, big block Chevy, Ford 289, 302, 390, and Chrysler 440 and HEMI engines find that chrome and polished aluminum valve covers, air cleaner kits, and timing chain covers complete the correct engine bay presentation for shows and driver quality restorations. The quality of u...
View Engine Covers Products