Alto 316803VB Hurth HSW 150 Marine Transmission Overhaul Kit | Replaces 023801DB

Alto 316803VB — Hurth HSW 150 Marine Transmission Overhaul Kit | Replaces OEM 023801DB

Alto 316803VB is a complete overhaul kit for the Hurth HSW 150 marine transmission (also referenced as the “150 volt” model). The kit includes the friction plates, steel separator plates, and seals required to rebuild the HSW 150 transmission clutch pack. Alto part number 316803VB replaces OEM Hurth/ZF reference 023801DB. Alto is a leading manufacturer of friction materials and transmission rebuild components for marine, automotive, and industrial applications.

Confirm Fitment Before Ordering

Not sure this is the right overhaul kit for your transmission? Contact us before ordering — have your transmission model designation and serial number ready from the data plate on the transmission housing. Our team can confirm the correct kit for your application by email, text, or live chat.

Part Specifications

• Alto Part Number: 316803VB
• SKU: ALTO-316803VB
• OEM Cross-Reference: 023801DB (Hurth/ZF OEM reference)
• Additional Cross-References: MMD-1013-410001, W1013-410001-1, W1013-410101
• Application: Hurth HSW 150 marine transmission (“150 volt”)
• Kit Type: Transmission overhaul / clutch pack rebuild kit
• Kit Contents: Friction plates, steel separator plates, and seals (verify exact contents against your transmission serial number and service manual)
• Vendor: Alto Products Corp.

Hurth HSW 150 Transmission — Application Notes

• The Hurth HSW 150 (“150 volt”) is a hydraulically actuated marine transmission used in inboard engine applications. The “150” designation refers to the transmission model series, not an electrical voltage specification.
• The HSW 150 was commonly paired with gasoline and diesel inboard marine engines in the 100–200 hp range across a wide variety of production and custom vessels.
• Hurth marine transmissions were later absorbed into the ZF product line. OEM service parts may be referenced under either Hurth or ZF part numbers — the 023801DB cross-reference applies to both.
• Before ordering, verify your transmission model designation from the data plate on the transmission housing. Confirm the overhaul kit part number against your transmission service manual or the Alto application guide for the HSW 150.
• Alto 316803VB uses Alto’s friction material formulations, which may differ from OEM Hurth/ZF friction specifications. Alto is widely used as an OEM-equivalent rebuild supplier in the marine transmission service industry.

Related Alto Marine Transmission Kits

• Alto 316903VA — Hurth HBW150V Overhaul Kit
• Alto 316907AV — Master Transmission Overhaul Kit
• Alto 316807D — ZF Transmission & V-Drive Overhaul Kit

Installation Notes

• Verify transmission model and serial number from the data plate before ordering — the HSW 150 has multiple sub-variants and service kits may differ by production date
• Consult the Hurth/ZF HSW 150 service manual for correct clutch pack assembly specifications, torque values, and friction plate installation orientation
• Soak new friction plates in clean transmission fluid for a minimum of 15 minutes before installation to pre-saturate the friction material
• Inspect the transmission housing, clutch drum, and piston bore for wear, scoring, or corrosion before reassembly — a rebuild kit will not correct mechanical wear in the housing or rotating components
• Replace all seals and O-rings in the kit regardless of apparent condition during overhaul — do not reuse original seals
• Use only the transmission fluid type specified by Hurth/ZF for the HSW 150 when refilling after overhaul

Additional Information

• Vendor: Alto Products Corp.
• SKU: ALTO-316803VB
• Alto Part Number: 316803VB
• OEM Cross-Reference: 023801DB
• Product Type: Drive Systems / Gasket & Seal Kits / Transmission Overhaul Kit
• Application: Hurth HSW 150 marine transmission
• Country of Origin: USA (verify)
• HS Code: 8708.99 / 8483.90 — marine transmission service parts (verify for your import classification)

Frequently Asked Questions

Q: What does “150 volt” mean in the Hurth transmission designation?
A: “150 volt” is an informal reference to the Hurth HSW 150 transmission model series. The “150” is a model number, not an electrical voltage specification. This terminology was commonly used in parts catalogs and service literature for this transmission.

Q: What OEM part number does Alto 316803VB replace?
A: Alto 316803VB replaces Hurth/ZF OEM reference 023801DB. Additional cross-references include MMD-1013-410001, W1013-410001-1, and W1013-410101.

Q: What does the 316803VB overhaul kit include?
A: The kit includes friction plates, steel separator plates, and seals for the HSW 150 clutch pack. Verify exact kit contents against your transmission serial number and service manual before installation, as sub-variant kits may differ.

Q: How do I confirm the 316803VB is the correct kit for my transmission?
A: Check the data plate on your transmission housing for the model designation and serial number, then contact us by email, text, or live chat — we’ll confirm the correct kit for your specific unit. You can also cross-reference against the Alto application guide for the HSW 150.

Q: Is the Alto 316803VB a direct OEM replacement?
A: Alto Products Corp. is a widely used OEM-equivalent supplier for marine and automotive transmission rebuild components. Alto friction materials may differ in specification from original Hurth/ZF friction plates but are designed to meet or exceed OEM performance requirements in normal service conditions.