aFe Twisted Steel 409 Headers — Dodge/Ram 1500 / Ram 1500 Classic 5.7L

Twisted Steel 409 shorty headers for documented Dodge/Ram 1500 and Classic 5.7L applications

The aFe 48-42001-1 header pair uses 1-5/8-inch 16-gauge mandrel-bent 409 stainless tubing, hand MIG welding, 4-to-1 mitered merge collectors and 3/8-inch one-piece flanges. Current exact manufacturer separates Dodge Ram 1500 2009–2010, Ram 1500 2011–2018 and Ram 1500 Classic 2019–2024, all gas V8 5.7L HEMI, both 2WD and 4WD. The later DT header procedure and its hardware are not interchangeable evidence.

Key Features

• Selected aFe part 48-42001-1.
• 1-5/8-inch 16-gauge 409 stainless mandrel-bent tubes, hand MIG welds and 4-to-1 mitered merge collectors; 3/8-inch one-piece flanges.
• Factory catalyst retention and stock mounting connections; primary describes no cutting or drilling. No cat-back, exhaust tips or new catalysts are included.
• Selected guide calls for heater-hose heat wrap and AT LEAST 2 inches between heater hoses and header. Wrap appears in its photograph but is omitted from the formal text bill; confirm actual packing before work.
• Retain the original left manifold bolt that mounts the dipstick tube and reuse it in the same location with the supplied spacer.
• Four supplied 3/8-16 x 2-1/4-inch bolt/nut pairs reconnect the original Y-pipe. Do not substitute the later DT guide’s original-hardware reuse instruction.
• Manufacturer: not CARB exempt, unavailable for California purchase or use on California DMV-registered vehicles. Confirm exact requirements before purchase or installation.

Fitment

Current exact observed rows separate Dodge Ram 1500 2009–2010, Ram 1500 2011–2018 and Ram 1500 Classic 2019–2024, gas V8 5.7L, 2WD/4WD. The full exact-MPN named table supports thirty groups but six old non-Classic Ram 1500 ranges run into 2019; clip those to the manufacturer’s 2018 endpoint instead of mapping the different DT generation. Extend supported Classic Express through 2022, Special Service through 2023 and Warlock through 2024. Restore Laramie 2011–2018, HFE 2014, Special Service 2014–2018, Classic SLT 2019–2022 and Classic Tradesman 2019–2024. The complete 2014 OEM feature table explicitly offers the 5.7L/eight-speed option in the HFE column; the standard V6 is not a whole-trim negative. Every row still requires actual 5.7L. Selected March 2022 guide ends Classic coverage at 2023; current primary explicitly includes 2024, with year-specific procedure differences to confirm before work.

Specifications

What's Included

• The 48-42001-1 kit includes one right and one left selected 409 stainless header.
• One right gasket, one left gasket, sixteen M8 x 1.25 x 25 mm bolts and one header-bolt spacer.
• Four 3/8-16 x 2-1/4-inch bolts and four 3/8-16 nuts for the original Y-pipe connections. Retain specifically identified factory dipstick/tube hardware.
• Guide step/photo show heater-hose heat wrap described as provided; text parts bill omits its part number and quantity, so confirm actual packing. No new catalysts, O2 sensors, tips, intake filter or coupling are established as supplied.

About aFe Power

aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.

Related Parts

• Exact selected 409 headers and current three generation scopes
• Complete 28-step selected guide, kit photograph and formal parts list
• Complete exact-MPN named table; non-Classic 2019 entries clipped to primary
• OEM 2014 feature table, page one HFE optional 5.7L/eight-speed evidence
• Shop headers and manifolds
• Shop aFe Power

FAQ

It is a 409 stainless MIG-welded header pair for documented Dodge/Ram 1500 and Ram 1500 Classic gas V8 5.7L configurations, with two gaskets and selected hardware.

The exact primary separates Ram 1500 2011–2018 from Ram 1500 Classic 2019–2024. Old non-Classic 2019 ranges were clipped to 2018. No DT fitment is inferred from a shared 5.7L engine name.

No. The complete manufacturer-authored 2014 feature table shows standard 3.6L and an optional 5.7L/eight-speed in the HFE column. The new HFE entry requires that actual 5.7L configuration; a V6 truck is not approved.

Selected step 13 calls for provided thermo-wrap on heater hoses and at least 2 inches between the hoses and header. Wrap is pictured but omitted from the formal text bill; confirm actual supplied protection before work.

Record the factory left manifold bolt that mounts the dipstick tube. Reuse that bolt in the same location with the provided spacer, and restore the tube using its original nut and bolt before refitting the dipstick.

Those steps are not in this selected 28-step guide. No later-header ABS routing, crossmember work or component identity is borrowed. Follow the exact vehicle requirements and clarify the unprinted final heatshield disposition with aFe.

The footer specifically names aFe’s downpipe, so it does not establish an exact selected-header requirement or authorize clearing/suppressing an emissions fault. No selected settings or coding procedure is printed.

The selected guide prints no numerical torque or mileage recheck interval; tighten head hardware center outward using applicable manufacturer service requirements. No selected numeric dyno result is linked. The product is not CARB exempt and has manufacturer California purchase/use restrictions.

Installation Instructions

1. Confirm aFe 48-42001-1 against the exact vehicle and installed equipment. Inventory the actual components and follow the selected manufacturer instructions and current vehicle service requirements.
2. Confirm the exact generation, actual gas V8 5.7L, drivetrain, selected packing list and emissions eligibility. Read all 28 selected steps, clarify 2024 procedure applicability and final heatshield arrangement, and confirm heater-hose protection before work. Cool the vehicle and support it properly; disconnect the battery using exact vehicle service requirements.
3. Release original muffler/exhaust clamps and hangers, remove the exhaust and extension pipe, unplug Y-pipe O2 connectors, and remove the original Y-pipe using the four original attachment nuts. Retain required original parts.
4. Work RIGHT first: remove four heatshield nuts and shield, then nine manifold bolts and manifold. Clean the gasket surface and install the selected right header/gasket using provided M8 bolts, tightening center outward. No numeric torque is printed.
5. Apply the selected provided thermo-wrap to the heater hoses as instructed, maintaining AT LEAST 2 inches between heater hoses and header. Confirm wrap actually supplied because its formal text-bill identity/quantity is unprinted.
6. Remove the LEFT shield, dipstick and tube, recording the specific original manifold/dipstick bolt and its location. Remove eight manifold bolts and manifold, clean the gasket surface, then install the selected left header/gasket using that original bolt with supplied spacer plus supplied M8 bolts. Tighten center outward.
7. Restore the dipstick tube using the original nut/bolt and refit the dipstick. Resolve the guide’s unprinted final manifold-heatshield arrangement with aFe. Reinstall the original Y-pipe with the four supplied 3/8-inch bolt/nut pairs initially finger tight.
8. Restore the original extension pipe with retained isolators/clamp, tighten the Y-pipe fasteners and extension clamp, reconnect original O2 connectors, restore the exhaust and clamp, then reconnect the battery properly. No numeric torque, mileage interval or later DT crossmember/ABS procedure is borrowed.

California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.