91270 Oil Cooler, Engine Oil (NISSENS OE-Spec Replacement)

The 91270 Oil Cooler, Engine Oil is a NISSENS oil cooler listed under our
Oil Cooler category at
CG Auto Parts Shop. Every listing includes a full manufacturer cross-reference
table so you can confirm fitment by part number before you order.

How It Works

An oil cooler is a dedicated heat exchanger that reduces engine oil or transmission fluid temperature by routing it through an air-cooled finned core or a coolant-jacketed plate-type core before it returns to lubricate bearings, seals, and gear surfaces. Keeping oil within its target operating temperature range protects the oil’s viscosity and its additive package.

Signs You Need a Replacement

A coolant-to-oil type cooler that fails internally mixes fluids, producing a milky emulsion visible on the dipstick or filler cap — a clear sign that demands immediate investigation. A clogged or collapsed air-cooled core raises oil temperatures gradually, accelerating wear across bearings and seals.

Brand & Manufacturing Authority

This oil cooler is manufactured by NISSENS, a recognised supplier
to the automotive aftermarket. The part number 91270 identifies this specific
unit in the manufacturer’s own catalog. It is supplied new — not remanufactured — and is backed by our
warranty policy.

Material & Construction

Built from brazed aluminium plate-type core for integrated engine designs, or a separate aluminium finned matrix for external transmission coolers; seals and crush washers at all union points. This construction is chosen to match or exceed the OE
specification it replaces under the same load, temperature, and service conditions.

Fitment Confidence

Year-make-model filters alone can miss mid-year production changes that affect fitment. The safest
method is to match the part number stamped on your existing oil cooler against the
cross-reference table below. If you can’t locate your existing part number, send your vehicle VIN
through our contact page and we’ll confirm before you order.

Product Specifications

Cross-Reference Compatibility Table

Match your existing part number against this table before ordering. All data is drawn directly
from the manufacturer’s own cross-reference documentation.

Installation & Safety Notes

Flush all circuits before fitting the new cooler to eliminate debris from the failed unit. Replace all sealing elements and check system fluid levels after refilling. Always follow your vehicle manufacturer’s torque specifications and service
manual procedure. For the engineering standards that govern this part category, see the
SAE International cooling system standards.

Quality Assurance

We verify every listing’s cross-reference data against the manufacturer’s own catalog before
publishing. We sell NISSENS parts because the brand has a documented track record in the
oil cooler category. If a part number doesn’t match your vehicle after
checking the table above, contact us and we’ll find the correct one.

Shipping, Returns & Warranty

Orders ship from our US warehouse. Delivery windows are on our
shipping policy page. If a part arrives damaged or doesn’t fit,
the return and claim process is in our terms of service and
warranty policy. Questions?
Contact us any time.

Why Buy From CG Auto Parts Shop

• Genuine NISSENS part, cross-referenced by manufacturer part number
• New condition — never remanufactured or reconditioned
• Backed by our warranty policy
• Fast US shipping — see shipping policy for timelines
• Fitment support — contact us with your VIN before ordering
• Transparent part numbers — no guesswork, no hidden cross-brand substitutions

Related Products in This Category

Browse more Oil Cooler parts, or explore the
full shop. More parts in this category include:

• 90859 Oil Cooler, Automatic Transmission (SKU 90859)
• 804.043 Oil Cooler, Automatic Transmission (SKU 804.043)
• 91480 Oil Cooler, Automatic Transmission (SKU 91480)
• 7730155 Oil Cooler, Automatic Transmission (SKU 7730155)

Choosing the Right Oil Cooler — A Buyer’s Guide

Shopping for a oil cooler by part number rather than by vehicle
model alone is the most reliable way to avoid a fitment mismatch. A year-make-model filter is a
starting point, but the same vehicle model can use different component specifications depending on
trim level, engine variant, and production date. The cross-reference table above is built from
the manufacturer’s own part-number data, which means the relationship between this part and the
vehicle application is confirmed at the component level rather than inferred from model data.

When you receive the new oil cooler, compare it physically against
the old part before installation — check overall dimensions, mounting hole positions, and connector
orientation. A direct visual comparison catches any discrepancy before time is invested in
disassembly. If anything doesn’t match despite the part number confirming correctly, contact us
before installing, since we can usually resolve fitment questions the same day.

We source our NISSENS parts directly through authorised supply
channels to ensure you receive the genuine part that the cross-reference table confirms. Aftermarket
quality varies enormously by brand; listing the actual manufacturer — rather than a generic
“compatible with” label — is how we give you the information needed to make a confident buying
decision. The About Us page explains our approach to sourcing and
part-number verification in more detail.

After Installation — What to Check

Once the new oil cooler is fitted and torqued to specification,
a brief test drive under controlled conditions is the best way to confirm the repair is successful
before returning the vehicle to normal use. Listen for any new noises from the affected area at low
speed over a rough surface, and confirm that the system behaviour feels correct. For suspension and
steering components, a wheel alignment check immediately after installation is strongly recommended,
since even a correctly fitted new part can require alignment correction compared to the worn part
it replaced. For braking components, a proper bed-in procedure — a series of graduated stops from
road speed — transfers an even layer of friction material and settles the new components before
maximum braking loads are applied.

Keep the installation date and part number noted in your service records. This information is
required if a warranty claim becomes necessary, and it makes future parts sourcing straightforward
since you’ll have a confirmed part number on file. Our warranty
policy page specifies the documentation needed to support a claim.

Frequently Asked Questions

Will this part fit my vehicle?

Match the part number on your existing oil cooler against the
cross-reference table on this page. If you’re unsure, send your VIN through our
contact page.

What brand is this part?

This is a NISSENS part, confirmed by matching SKU
91270 in the manufacturer’s cross-reference data.

Is this a new part or remanufactured?

New condition. All parts in our shop are new — no remanufactured
or reconditioned units.

How long does shipping take?

See our shipping policy for current carrier options and
delivery windows from our US warehouse.

What warranty does this part carry?

Coverage terms are detailed on our warranty policy page.

Helpful Links

Home ·
Shop ·
Oil Cooler ·
About Us · FAQ · Shipping Policy · Warranty Policy · Terms of Service · Contact Us