Product Description
Stabilize your 12-valve valvetrain with INDUSTRIAL INJECTION’s 150 lb seat pressure springs (PN 24G801). Ideal for street/strip 12V builds pushing higher boost and RPM, these springs help prevent valve float so your engine stays crisp and safe under load.
- 150 lb seat pressure for improved control under boost
- Designed for builds running ~45+ PSI boost and/or 3200+ RPM
- Valvetrain stability to ~4,000–4,500 RPM (application-dependent)
- Includes intake and exhaust valve springs (reuse OEM retainers/locks)
Fitment
- 1989–1998 Dodge Ram 2500/3500 with 5.9L Cummins 12-valve
- Also fits many 3.9L 4BT Cummins applications (verify ESN)
What’s Included
- Industrial Injection 150 lb valve spring set — intake & exhaust springs
- Note: Retainers and locks are not included; reuse your OEM hardware
Recommended Parts (Internal Links)
- 12V Valve Spring Compressor Tool — speeds install: CPP 12V Compressor Tool
- Head Studs for 12V (added clamping for higher boost): ARP 247-4203 Head Stud Kit
- Valve Stem Seals (refresh during spring swap): Cummins 3957912 OEM Seal
- 12V Pushrods (upgrade while you’re in there): 12V Pushrods — shop all
- Browse all 12V valve springs & hardware: 12V Valve Springs Category
Alternatives
- Hamilton 165# Beehive (07-S-001) — higher seat/open pressure
- See more 12V spring options
Specifications
| Brand | Industrial Injection |
|---|---|
| Part Number | 24G801 (cross-ref DP12V.1) |
| Seat Pressure | 150 lb |
| RPM Range | Approx. up to 4,000–4,500 RPM (build-dependent) |
| UPC | 840256908206 |
| GTIN | 840256908206 (GTIN-12) |
| Prop 65 | Yes — Warning: Cancer & Reproductive Harm (P65Warnings.ca.gov) |
Helpful Notes
- Set valve lash after installation.
- For aggressive cams/high boost, consider upgraded retainers/locks and pushrods.
- For 4BT industrial uses, verify ESN and hardware before ordering.
FAQ
Do these include retainers and locks?No. This set includes springs only. Reuse your OEM retainers and locks or source replacements if worn.
Are 150 lb springs enough for a bigger turbo?For most street builds up to ~4,000–4,500 RPM and ~45–60 PSI boost, 150 lb seat pressure prevents valve float. If you’re running very high lift, more RPM, or heavy boost, consider higher-pressure or dual springs.
Will these fit my 1994–1998 12V P-pump truck?Yes—fits 1989–1998 Dodge Ram 5.9L Cummins 12-valve. Also commonly used on 4BT; verify ESN on industrial applications.
Do I need head studs for these springs?Springs don’t require studs, but if you’re raising boost, ARP 247-4203 is strongly recommended to maintain head gasket integrity.
Shop more 12V engine hardware: 94–98 12V Engine Parts
