Can I also have the parts installed?

We have a workshop where we can provide installation for many parts, such as drivetrain, limited-slip differentials, clutches, suspension, and wheel alignment.

Is the stock shown in the webshop accurate?

Yes, our stock indicates local inventory in Kruiningen. We also have this page with average delivery times for backorder products: https://www.motorsportparts.nl/voorraad/

How long does a differential or transfer case rebuild take?

The majority of rebuilds take 1 working day. For larger jobs requiring CNC work, we will provide an estimated time per case.

Is shipping outside the Netherlands or Europe possible?

Yes, we ship worldwide at competitive rates. Please contact us for a custom quote.

Is your differential not listed in the webshop yet?

We rebuild many brands. If yours isn't listed, please contact us for conditions and a cost estimate.

Will my order be shipped today?

DHL pickup is daily around 15:00. Orders received before 13:00 that are in stock are usually included.

Can a limited-slip differential be adjusted or tuned?

Yes, we can modify and tune almost any LSD. We are the leading specialist in Europe for tuning OS Giken Superlocks, building competition-winning setups for street, rally, drift, and off-road use.

Overview

Olds 330-355 3/8" 12pt header bolt kit

€26,44

Price excluding VAT: €21,85

Our stock:

0 Items

Item No.:

180-1201

SKU:

Olds 330-355 3/8" 12pt header bolt kit

Delivery time: Out of stock at supplier, delivery time unknown (Supplier stock indication updated on: 09-05-2026 09:39. This status is an indication.)

More ARP | More ARP-import

Olds 330-355 3/8" 12pt header bolt kit

Applications

Oldsmobile 330
Oldsmobile 350
Oldsmobile 355

Material: 8740 Chrome Moly

8740 CHROME MOLY: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.

Yield strength: 180,000 psi

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