Alto 023023 Marine Transmission Gasket | Replaces Velvet Drive L4-146

Alto 023023 — Marine Transmission Gasket | Replaces Velvet Drive L4-146

Alto 023023 is an individual marine transmission gasket that replaces Velvet Drive OEM reference L4-146. This gasket is sold individually for use in Velvet Drive transmission service and overhaul. Alto Products Corp. is a leading manufacturer of friction materials, gaskets, seals, and transmission rebuild components for marine, automotive, and industrial applications.

Confirm Fitment Before Ordering

Not sure this is the correct gasket for your transmission? Contact us before ordering — have your transmission model and serial number ready. Our team can confirm the correct gasket for your application by email, text, or live chat.

Part Specifications

• Alto Part Number: 023023
• OEM Cross-Reference: Velvet Drive L4-146
• Part Type: Individual transmission gasket
• Sold: Individually
• Vendor: Alto Products Corp.

Application Notes — Velvet Drive Transmissions

• Alto 023023 replaces Velvet Drive OEM gasket reference L4-146. Confirm this gasket reference against your transmission service manual before ordering.
• This gasket is sold individually. If performing a complete overhaul, consider an overhaul gasket set that includes all gaskets and seals required for a full rebuild — see related products below.
• When replacing individual gaskets, inspect all mating surfaces for corrosion, scoring, or warping before installation — a damaged mating surface will cause leaks regardless of the gasket quality.
• Do not reuse compressed or damaged gaskets — replace with new units during any service that requires disassembly of the gasketed joint.

Related Alto Gaskets & Seal Kits

• Alto 023021 — Gasket
• Alto 023025 — Gasket Bearing Retainer
• Alto 023027 — V-Drive Gasket
• Alto 340800 — Overhaul Gasket Set for Velvet Drive 5000 Series
• Alto 340800V — Overhaul Gasket Set Velvet Drive 5000 Series V-Drive
• Alto 023801DB — Velvet Drive CR2 Series Seal Kit

Additional Information

• Vendor: Alto Products Corp.
• Part Number: 023023
• OEM Cross-Reference: Velvet Drive L4-146

Installation Notes

• Clean all mating surfaces thoroughly before installing the new gasket — residue from old gaskets or sealant will cause leaks
• Do not use additional sealant on gaskets unless specified by the transmission service manual
• Torque all fasteners to the specification in the transmission service manual — over-torquing will crush the gasket and cause leaks or damage the housing
• Do not reuse a gasket that has been compressed or disturbed — always install a new gasket when reassembling a gasketed joint
• Inspect the housing bore and mating surfaces for cracks or corrosion before installation

Frequently Asked Questions

Q: What OEM part does Alto 023023 replace?
A: Alto 023023 replaces Velvet Drive OEM gasket reference L4-146. Confirm this reference against your transmission service manual before ordering.

Q: What Velvet Drive transmission does this gasket fit?
A: Contact us with your Velvet Drive transmission model and serial number and we’ll confirm the correct gasket for your application by email, text, or live chat.

Q: Is this gasket sold as part of a kit?
A: Alto 023023 is sold individually. If you are performing a complete overhaul, consider an overhaul gasket set such as Alto 340800 (Velvet Drive 5000 Series) or Alto 340800V (V-Drive), which include all gaskets and seals needed for a full rebuild.

Q: Should I use sealant with this gasket?
A: Only use sealant if specified by the transmission service manual for this joint. Most gaskets are designed to seal without additional sealant — adding sealant where not required can cause blockage or contamination of fluid passages.

Q: Can I reuse my old gasket if it looks okay?
A: No — do not reuse a gasket that has been compressed or disturbed. Once a gasket is torqued and seated, it takes a set to the mating surfaces. Reuse will result in an incomplete seal and leaks. Always install a new gasket on reassembly.