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MAHLE / CLEVITE CB1278AL
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| MAHLE / CLEVITE CB1278AL Specifications |
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| Min Shaft | Max Shaft | Min Oil | Max Oil | Max Wall | Min Bore | Max Bore | Max Length | | 1.6527 | 1.6535 | 0.0011 | 0.0035 | 0.0588 | 1.7717 | 1.7725 | 0.694 |
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| P Series (Tri-Metal); Pair |
As more and more OE manufacturers shift to aluminum bearings in OE engines, Clevite has introduced a line of A-Series engine bearings designed to be the highest quality replacement bearings in the industry. Clevite BiMetal™ engine bearings carry on the tradition and reputation that Clevite has built throughout the course of time.
Clevite BiMetal engine bearings feature a 100% lead free aluminum-silicon bi-metal material; this includes 60% more silicon than leading competitor's bi-metal material for better conditioning of journal surfaces. These BiMetal bearings also offer greater wear resistance than leading competitor's bi-metal material, as well as greater seizure resistance than the leading competitor. Clevite BiMetal bearings feature 100% bored ID's for precision and surface characteristics and where appropriate - straight shell main bearings utilizing an "umbrella" groove that allows for superior oil control and improved pressure. Widely used at the OEM level in the past 15 years, bi-metal bearings are a very good choice for stock replacement parts on engines that have bi-metal bearings from the factory.
The letters at the end of each part number indicate a specific feature of the part.
Example:
Part #CB1234HXNK: H = High Performance, X = .001" more oil clearance than standard, N = Narrowed for greater crankshaft fillet clearance, K = TriArmor™ coating applied to the bearing surface.
| Letters & Their Meanings | A
Steel backed lead free aluminum silicon alloy bearings without overlay. Standard replacement material. | M
Steel backed bearings with a Micro-Babbitt lining (a very thin layer of lining which reduces the microscopic deflections that occur to a bearing when loaded and thus increases fatigue life). Solely intended for extreme high-horsepower applications. | AL
Solid cast aluminum alloy bearings (material designation AL-1) or steel backed bearings with an aluminum alloy lining material designation AL-3, AL-4, AL-5, AL-6). Standard replacement material. | N
Narrowed for greater crankshaft fillet clearance. | B
Steel backed bearings with a conventional babbit lining. | P
Steel backed bearings with an intermediate layer of copper-lead alloy and an electroplated lead-tin-copper overlay. Standard replacement material. | C
Steel backed bearings with a copper-lead lining. | R
Indicates that the bearing can be resized to standard. When following a camshaft bearing, indicates that it has extra bore stock in the inside diameter. | D
Bearing has dowel hole. | S
Indicates a set number designation. | G
Steel backed bearings with a matrix of copper and an infiltrant of lead-tin babbitt. Precision undersizes are not resizable. | V
High performance bearing with a lead-indium overlay (on main sets this indicates partial groove). Solely intended for extreme high-horsepower applications. | H
High performance bearing (on main sets this indicates partial groove). Perform the same as "A" and "P" bearings, but have the ability to carry more load. | VG
High performance bearing with a lead-indium overlay and a full annular groove. Solely intended for extreme high-horsepower applications. | HG
High performance full annular grooved bearing. Perform the same as "A" and "P" bearings, but have the ability to carry more load. | X
Bearing has .001” more oil clearance than standard. | HT
High performance with indentless locating lug. “Full Bore” design. Perform the same as "A" and "P" bearings, but have the ability to carry more load. | XX
Bearing has .002” more oil clearance than standard. | K
TriArmor™ coating applied to the bearing surface, which offers extraordinary protection and lubricity. Enhanced wear characteristics increase bearing life in race engines and high performance street Engines. | W
Indicates a part that is a thrust washer (may also be designated upper or lower). |
 Additional Resources
Engine Bearing Failure Analysis and Correction
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Closeout Inventory Warranty Information:Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy).MAHLE / CLEVITE Regular Inventory Warranty Information:12 Months |
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