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  • 1977-78 Honda CB750F / CB750K Countershaft Sprocket Oil Seal ~ 29.8 x 62 x 7 ~ Replaces 91205-405-005
Honda CB750F CB750K countershaft sprocket oil seal 29.8 x 62 x 7 91205-405-005
Countershaft sprocket oil seal parts fiche diagram, SKU 73-0957, highlighted reference 23
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB750F CB750K countershaft sprocket oil seal 29.8 x 62 x 7 91205-405-005

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Load image into Gallery viewer, Honda CB750F CB750K countershaft sprocket oil seal 29.8 x 62 x 7 91205-405-005
Load image into Gallery viewer, Countershaft sprocket oil seal parts fiche diagram, SKU 73-0957, highlighted reference 23

1977-78 Honda CB750F / CB750K Countershaft Sprocket Oil Seal ~ 29.8 x 62 x 7 ~ Replaces 91205-405-005

73-0957
$19.95 USD
In stock Usually ships the same or next business day
Check model fitment View fitment
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Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1977-78 Honda CB750F / CB750K Countershaft Sprocket Oil Seal ~ 29.8 x 62 x 7 ~ Replaces 91205-405-005
$19.95 USD
Description

Replace your countershaft sprocket oil seal with this Countershaft Sprocket Oil Seal, 29.8 x 62 x 7, replacing OEM #91205-405-005. High-quality, made in Japan.

Key Features
• Countershaft Sprocket Oil Seal
• 29.8 x 62 x 7
• Replaces OEM #91205-405-005
• Made in Japan

Fitment / Compatibility

• Honda CB750K (1977‑78)
• CB750F (1977‑78) Supersport

Part Number: 73-0957

Read More
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Check the listed model and year, then read any fitment notes in the description.

Make Model Year
Honda CB750K 1977
Honda CB750F 1977
Honda CB750K 1978
Honda CB750F 1978

Free ground shipping over $50

To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.

Estimated ground delivery after your order ships
DestinationDelivery time
USA4–7 business days
Canada2–6 business days

Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.

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60-day returns on eligible parts

No restocking fees. Eligible parts must be unused, uninstalled, unaltered and complete. The 60-day window starts when your order is delivered.

Electrical parts are excluded from standard returns. Check return eligibility.

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Other shipping options

Canada Post Economy: Available at checkout for select small items. Allow 1–3 weeks for delivery. No tracking or insurance is included.

Outside the USA & Canada: Delivery times vary by destination and shipping method. Buyers are responsible for applicable duties, taxes and import fees. We cannot mark orders as gifts.

Frequently Asked Questions

What are the dimensions and Honda reference for this countershaft sprocket oil seal?

The Japanese-made seal measures 29.8 x 62 x 7mm and replaces Honda OEM 91205-405-005. This is the later 1977-1978 CB750 seal and is not interchangeable with the 25 x 62 x 8mm 1969-1976 version.

How many 91205-405-005 seals are included and required?

One seal is included, and one is required at this countershaft sprocket oil seal location on one compatible engine.

What installation checks help prevent a new oil seal from leaking?

Identify and correct shaft play, wear grooves, crankcase pressure or a blocked breather before installation. Protect the seal lip from splines and sharp edges, lubricate it as specified and install it squarely with the sealing lip facing the direction shown in the Honda service procedure.

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